Medical terminology, before day one

365 word parts · 88 terms to decode

The single best head start for an incoming PA student is to walk in already fluent in the language. Class moves fast and nobody stops to define the words. Learn the Greek and Latin building blocks now and you'll decode almost any term on sight — this is a free, no-login set of leveled flashcard decks and self-grading practice quizzes, from day-one foundations to decoding whole terms on sight, with pronunciations throughout.

How to decode almost any medical term

About 75% of medical terms are built from a small, reusable set of word parts. Read every term in three pieces:

Prefix

The modifier out front — location, quantity, time, status.

Root

The core — the body part or system it's about.

Suffix

The ending — the condition, disease, or procedure.

Worked example

osteoarthritis = oste/o (bone) + arthr/o (joint) + -itis (inflammation) = inflammation of the bone and joint.

The linking vowel (usually “o”): drop it before a suffix that starts with a vowel (hepat/o + -ic = hepatic), keep it before one that starts with a consonant (arthr/o + -pathy = arthropathy). Never use it between a prefix and a root.

127 terms

Prefixes

The modifier out front — location, quantity, time, or status.

  • a-, an-· AY, AN

    Prefix

    without, lacking, absence of

    Anemia — lacking (enough) red blood cells

  • anti-· AN-tee, AN-tye

    Prefix

    against, opposing

    Antibiotic — works against bacteria

  • brady-· BRAD-ee

    Prefix

    slow

    Bradycardia — slow heart rate

  • dys-· DIS

    Prefix

    difficult, painful, abnormal

    Dyspnea — difficult breathing

  • endo-, intra-· EN-doh, IN-truh

    Prefix

    within, inside

    Endocrine — secreting within (the body); intravenous — within a vein

  • epi-· EP-ih

    Prefix

    upon, over, above

    Epidermis — the outer layer upon the skin

  • hyper-· HY-per

    Prefix

    excessive, above normal

    Hypertension — high blood pressure

  • hypo-· HY-poh

    Prefix

    deficient, below normal

    Hypotension — low blood pressure

  • inter-· IN-ter

    Prefix

    between

    Intercostal — between the ribs

  • peri-· PER-ee

    Prefix

    around, surrounding

    Pericarditis — inflammation around the heart

  • poly-· POL-ee

    Prefix

    many, excessive

    Polyuria — excessive urination

  • sub-· SUB

    Prefix

    under, beneath

    Subcutaneous — under the skin

  • tachy-· TAK-ee

    Prefix

    fast, rapid

    Tachycardia — rapid heart rate

Word roots

The core of the term — the body part or system it's about.

  • angi/o, vas/o· AN-jee-oh

    Root

    blood vessel

    Angiogram — an image of a vessel

    Cardiovascular
  • arteri/o· ar-TEER-ee-oh

    Root

    artery

    Arteriosclerosis — hardening of the arteries

    Cardiovascular
  • cardi/o· KAR-dee-oh

    Root

    heart

    Cardiomegaly — enlarged heart

    Cardiovascular
  • hem/o, hemat/o· HEE-moh, HEE-muh-toh

    Root

    blood

    Hematology — the study of blood

    Hematology
  • phleb/o, ven/o· FLEB-oh

    Root

    vein

    Phlebotomy — incision into a vein (to draw blood)

    Cardiovascular
  • thromb/o· THROM-boh

    Root

    clot

    Thrombosis — formation of a clot

    Hematology
  • bronch/o· BRONG-koh

    Root

    bronchus, airway

    Bronchitis — inflammation of the airways

    Pulmonary
  • laryng/o· luh-RING-goh

    Root

    larynx, voice box

    Laryngitis — inflammation of the larynx

    Eyes/Ears/Nose/Throat
  • pneum/o, pulmon/o· NOO-moh

    Root

    lung, air

    Pneumonia — infection of the lung

    Pulmonary
  • rhin/o· RYE-noh

    Root

    nose

    Rhinoplasty — surgical repair of the nose

    Eyes/Ears/Nose/Throat
  • cholecyst/o· koh-lee-SIS-toh

    Root

    gallbladder

    Cholecystectomy — removal of the gallbladder

    Gastrointestinal/Nutrition
  • col/o· KOH-loh

    Root

    colon, large intestine

    Colonoscopy — visual exam of the colon

    Gastrointestinal/Nutrition
  • enter/o· EN-ter-oh

    Root

    intestines (usually small)

    Gastroenteritis — inflammation of the stomach and intestines

    Gastrointestinal/Nutrition
  • gastr/o· GAS-troh

    Root

    stomach

    Gastritis — inflammation of the stomach

    Gastrointestinal/Nutrition
  • hepat/o· HEP-uh-toh

    Root

    liver

    Hepatitis — inflammation of the liver

    Gastrointestinal/Nutrition
  • cerebr/o, encephal/o· SER-uh-broh, en-SEF-uh-loh

    Root

    brain

    Encephalitis — inflammation of the brain

    Neurology
  • myel/o· MY-eh-loh

    Root

    spinal cord, bone marrow

    Myelogram — an image of the spinal cord

    Neurology
  • neur/o· NOO-roh

    Root

    nerve

    Neuropathy — disease of the nerves

    Neurology
  • arthr/o· AR-throh

    Root

    joint

    Arthritis — inflammation of a joint

    Musculoskeletal
  • chondr/o· KON-droh

    Root

    cartilage

    Chondromalacia — softening of cartilage

    Musculoskeletal
  • derm/o, dermat/o· DUR-moh, DUR-muh-toh

    Root

    skin

    Dermatitis — inflammation of the skin

    Dermatology
  • my/o· MY-oh

    Root

    muscle

    Myopathy — disease of the muscle

    Musculoskeletal
  • oste/o· OS-tee-oh

    Root

    bone

    Osteoarthritis — inflammation of bone and joint

    Musculoskeletal
  • cyst/o· SIS-toh

    Root

    bladder (or sac)

    Cystoscopy — visual exam of the bladder

    Genitourinary
  • nephr/o, ren/o· NEF-roh

    Root

    kidney

    Nephrology — the study of the kidneys

    Renal
  • ur/o· YOO-roh

    Root

    urine, urinary tract

    Urology — the study of the urinary tract

    Genitourinary

Suffixes

The ending — the condition, disease, or procedure.

  • -algia, -dynia· AL-jee-uh, DIN-ee-uh

    Suffix

    pain

    Neuralgia — nerve pain

  • -cele· SEEL

    Suffix

    hernia, protrusion

    Hydrocele — a fluid-filled protrusion

  • -centesis· sen-TEE-sis

    Suffix

    surgical puncture to remove fluid

    Amniocentesis — puncture to withdraw amniotic fluid

  • -ectomy· EK-tuh-mee

    Suffix

    surgical removal, excision

    Appendectomy — removal of the appendix

  • -emia· EE-mee-uh

    Suffix

    blood condition

    Anemia — a low-red-blood-cell condition

  • -itis· EYE-tis

    Suffix

    inflammation

    Bronchitis — inflammation of the airways

  • -logy· LOH-jee

    Suffix

    study of

    Pathology — the study of disease

  • -lysis· LY-sis

    Suffix

    breakdown, destruction, separation

    Hemolysis — breakdown of red blood cells

  • -megaly· MEG-uh-lee

    Suffix

    enlargement

    Cardiomegaly — enlargement of the heart

  • -oma· OH-muh

    Suffix

    tumor, mass

    Carcinoma — a cancerous tumor

  • -osis· OH-sis

    Suffix

    abnormal condition

    Cyanosis — an abnormal bluish discoloration

  • -pathy· PATH-ee

    Suffix

    disease, disorder

    Cardiomyopathy — disease of the heart muscle

  • -plasty· PLAS-tee

    Suffix

    surgical repair, reconstruction

    Rhinoplasty — surgical repair of the nose

  • -scopy· SKOH-pee

    Suffix

    visual examination

    Endoscopy — visual exam of the inside of the body

  • -stomy· STOH-mee

    Suffix

    creation of a new opening

    Colostomy — a new opening into the colon

  • -tomy· TOH-mee

    Suffix

    cutting, incision

    Tracheotomy — an incision into the trachea

Anatomy position & movement

Direction, planes, cavities, regions, and movement — the vocabulary every anatomy lab, exam, and physical-exam note is written in.

  • anterior (ventral)· an-TEER-ee-er

    Anatomy

    toward the front of the body

    The sternum is anterior to the heart

  • posterior (dorsal)· pos-TEER-ee-er

    Anatomy

    toward the back of the body

    The spine is posterior to the esophagus

  • superior (cranial)· soo-PEER-ee-er

    Anatomy

    toward the head end of the body

    The heart is superior to the diaphragm

  • inferior (caudal)· in-FEER-ee-er

    Anatomy

    toward the feet end of the body

    The liver is inferior to the diaphragm

  • medial· MEE-dee-ul

    Anatomy

    toward the midline of the body

    The big toe is on the medial side of the foot

  • lateral· LAT-er-ul

    Anatomy

    away from the midline of the body

    In anatomical position the thumb is on the lateral side of the hand

  • proximal· PROK-sih-mul

    Anatomy

    closer to the trunk or the point of attachment

    The elbow is proximal to the wrist

  • distal· DIS-tul

    Anatomy

    farther from the trunk or the point of attachment

    The fingers are distal to the wrist

  • superficial· soo-per-FISH-ul

    Anatomy

    closer to the surface of the body

    The skin is superficial to the muscle

  • deep· DEEP

    Anatomy

    farther from the surface of the body

    The femur is deep to the thigh muscles

  • supine· SOO-pine

    Anatomy

    lying face up

    The patient is supine on the exam table for an abdominal exam

  • prone· PROHN

    Anatomy

    lying face down

    Prone positioning improves oxygenation in ARDS

  • ipsilateral· ip-sih-LAT-er-ul

    Anatomy

    on the same side of the body

    A left-sided lesion with left-sided (ipsilateral) signs — see ipsi- in Level 2

  • contralateral· kon-truh-LAT-er-ul

    Anatomy

    on the opposite side of the body

    A left-brain stroke causes contralateral (right-sided) weakness — see contra- in Level 2

  • bilateral· by-LAT-er-ul

    Anatomy

    on both sides of the body

    Bilateral lower-extremity edema

  • sagittal plane· SAJ-ih-tul

    Anatomy

    a vertical plane dividing the body into left and right parts

    The midsagittal plane splits the body into equal halves

  • coronal (frontal) plane· kuh-ROH-nul

    Anatomy

    a vertical plane dividing the body into front and back parts

    A coronal section shows the structures from the front

  • transverse (axial) plane· tranz-VERSS

    Anatomy

    a horizontal plane dividing the body into upper and lower parts

    CT slices are usually transverse (axial) sections

  • cranial cavity· KRAY-nee-ul

    Anatomy

    the space inside the skull that holds the brain

    A bleed inside the cranial cavity raises intracranial pressure

    Neurology
  • vertebral canal· VER-teh-brul

    Anatomy

    the channel through the vertebrae that holds the spinal cord

    Spinal stenosis narrows the vertebral canal

    Neurology
  • thoracic cavity· thor-AS-ik

    Anatomy

    the chest space enclosed by the ribs, holding the heart and lungs

    The diaphragm is the floor of the thoracic cavity

    Pulmonary
  • abdominopelvic cavity· ab-dom-ih-noh-PEL-vik

    Anatomy

    the space below the diaphragm holding the digestive, urinary, and reproductive organs

    The abdominopelvic cavity is mapped in four quadrants or nine regions

    Gastrointestinal/Nutrition
  • pleural cavity· PLOOR-ul

    Anatomy

    the potential space between the two pleural layers around each lung

    Air in the pleural cavity is a pneumothorax

    Pulmonary
  • pericardial cavity· per-ih-KAR-dee-ul

    Anatomy

    the potential space between the pericardial layers around the heart

    Fluid in the pericardial cavity can cause tamponade

    Cardiovascular
  • peritoneal cavity· per-ih-toh-NEE-ul

    Anatomy

    the potential space between the peritoneal layers lining the abdomen

    Free fluid in the peritoneal cavity is ascites

    Gastrointestinal/Nutrition
  • cervical· SER-vih-kul

    Anatomy

    the neck region

    C1–C7 are the cervical vertebrae; cervical lymph nodes sit in the neck

    Musculoskeletal
  • axillary· AK-sih-lair-ee

    Anatomy

    the armpit region

    Axillary lymph nodes drain the breast

    Musculoskeletal
  • brachial· BRAY-kee-ul

    Anatomy

    the upper arm region

    The brachial artery pulse is felt medial to the biceps tendon

    Musculoskeletal
  • antecubital· an-tee-KYOO-bih-tul

    Anatomy

    the region in front of the elbow

    The antecubital fossa — where blood is drawn

    Musculoskeletal
  • carpal· KAR-pul

    Anatomy

    the wrist region

    Carpal tunnel syndrome compresses the median nerve at the wrist

    Musculoskeletal
  • inguinal· ING-gwih-nul

    Anatomy

    the groin region

    An inguinal hernia bulges at the groin

    Musculoskeletal
  • femoral· FEM-er-ul

    Anatomy

    the thigh region

    The femoral artery pulse is felt below the inguinal ligament

    Musculoskeletal
  • patellar· puh-TEL-er

    Anatomy

    the kneecap region

    The patellar reflex tests L2–L4

    Musculoskeletal
  • popliteal· pop-LIT-ee-ul

    Anatomy

    the region behind the knee

    The popliteal pulse is felt in the hollow behind the knee

    Musculoskeletal
  • lumbar· LUM-bar

    Anatomy

    the lower back region

    A lumbar puncture enters between L3 and L4

    Musculoskeletal
  • gluteal· GLOO-tee-ul

    Anatomy

    the buttock region

    The gluteal muscles extend and abduct the hip

    Musculoskeletal
  • umbilical· um-BIL-ih-kul

    Anatomy

    the navel region at the center of the abdomen

    Early appendicitis pain starts periumbilical

    Gastrointestinal/Nutrition
  • flexion· FLEK-shun

    Anatomy

    bending that decreases the angle at a joint

    Bending the elbow to bring the hand toward the shoulder

    Musculoskeletal
  • extension· ek-STEN-shun

    Anatomy

    straightening that increases the angle at a joint

    Straightening the knee from a seated position

    Musculoskeletal
  • abduction· ab-DUK-shun

    Anatomy

    movement of a limb away from the midline

    Raising the arm out to the side — see ab- in Level 2

    Musculoskeletal
  • adduction· ad-DUK-shun

    Anatomy

    movement of a limb toward the midline

    Lowering the arm back to the side — see ad- in Level 2

    Musculoskeletal
  • rotation· roh-TAY-shun

    Anatomy

    turning a body part around its own long axis

    Internal and external rotation of the hip

    Musculoskeletal
  • circumduction· ser-kum-DUK-shun

    Anatomy

    moving a limb so it traces a cone, as in arm circles

    Circumduction of the shoulder combines flexion, abduction, extension, and adduction

    Musculoskeletal
  • pronation· proh-NAY-shun

    Anatomy

    turning the palm to face down

    Pronating the forearm to type on a keyboard

    Musculoskeletal
  • supination· soo-pih-NAY-shun

    Anatomy

    turning the palm to face up

    Supinating the forearm to hold a bowl of soup

    Musculoskeletal
  • inversion· in-VER-zhun

    Anatomy

    turning the sole of the foot inward

    Most ankle sprains are inversion injuries to the lateral ligaments

    Musculoskeletal
  • eversion· ee-VER-zhun

    Anatomy

    turning the sole of the foot outward

    Eversion stresses the medial (deltoid) ligament

    Musculoskeletal
  • dorsiflexion· dor-sih-FLEK-shun

    Anatomy

    pulling the foot up toward the shin

    Foot drop is a loss of dorsiflexion

    Musculoskeletal
  • plantar flexion· PLAN-tar

    Anatomy

    pointing the foot down, away from the shin

    Standing on tiptoe is plantar flexion

    Musculoskeletal

Charting shorthand

Everyday chart and prescription shorthand you'll read on day one.

  • BID

    Charting

    twice a day

  • TID

    Charting

    three times a day

  • QID

    Charting

    four times a day

  • PRN

    Charting

    as needed

  • PO

    Charting

    by mouth (orally)

  • NPO

    Charting

    nothing by mouth

  • STAT

    Charting

    immediately

  • Dx

    Charting

    diagnosis

  • Hx

    Charting

    history

  • Tx

    Charting

    treatment

  • Rx

    Charting

    prescription, treatment plan

  • Charting

    with (a line over the c)

  • Charting

    without (a line over the s)

Do-Not-Use safety list

Error-prone abbreviations the Joint Commission bans — and the safe way to write them.

  • U or u

    Do Not Use

    Misread as 0, 4, or cc — a 10× overdose risk.

    Instead: Write "unit"

  • IU

    Do Not Use

    Misread as "IV" or the number 10.

    Instead: Write "International Unit"

  • Q.D., QD, qd

    Do Not Use

    Confused with QOD or QID.

    Instead: Write "daily"

  • Q.O.D., QOD, qod

    Do Not Use

    Confused with QD or QID.

    Instead: Write "every other day"

  • Trailing zero (1.0 mg)

    Do Not Use

    The decimal is missed — read as 10 mg.

    Instead: Write "1 mg"

  • Naked decimal (.5 mg)

    Do Not Use

    The decimal is missed — read as 5 mg.

    Instead: Write "0.5 mg"

  • MS, MSO4

    Do Not Use

    Confused with magnesium sulfate.

    Instead: Write "morphine sulfate"

  • MgSO4

    Do Not Use

    Confused with morphine sulfate.

    Instead: Write "magnesium sulfate"

  • µg

    Do Not Use

    Misread as "mg" — a 1,000× error.

    Instead: Write "mcg" (micrograms)

  • cc

    Do Not Use

    Misread as "u" (units).

    Instead: Write "mL" (milliliters)

Get a head start now — then bring your own material

These decks get the language in your head before class. Once you're in, the volume is the hard part — and that's what the rest of PA School Survival is for: upload your ownlecture slides and it turns them into flashcards and board-style questions, filed to the NCCPA PANCE blueprint, with spaced repetition that brings each card back right before you'd forget it. Free to start, no account needed to try.

A study aid, not medical advice — always verify against primary sources and your faculty. Definitions follow standard medical usage.

Frequently asked

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