Latin Anatomy Terms: 40 Root Words That Decode Most Structure Names
Quick answer: Most anatomical names are built from a small set of Latin nouns (what the structure is: cavitas = cavity, angulus = angle, margo = border, planum = plane, spatium = space) plus adjectives or genitives (where it is or what it belongs to: dexter = right, profundus = deep, carpi = of the wrist). Learn about 40 of these roots and two grammar rules, and names like arcus palmaris profundus or spatium intercostale translate themselves.
Latin is still the official language of anatomy. The international standard, Terminologia Anatomica (second edition, TA2), published by the Federative International Programme for Anatomical Terminology (FIPAT), lists its official terms in Latin, with English equivalents alongside. That's why lecturers in Istanbul, Berlin and Bucharest use the same names, and why searching "cavitas ne demek" or "what does angulus mean" is one of the most common things first-year students do.
How an anatomical name is built
Almost every term follows the same pattern:
[noun: what it is] + [adjective or genitive: which one / of what]
- fossa poplitea: fossa (pit) + poplitea (of the back of the knee) → the popliteal fossa
- angulus sterni: angulus (angle) + sterni (of the sternum) → the sternal angle
- spatium intercostale: spatium (space) + intercostale (between the ribs) → the intercostal space
- arcus palmaris profundus: arcus (arch) + palmaris (of the palm) + profundus (deep) → the deep palmar arch
Once you see the pattern, the job becomes vocabulary.
Shapes and spaces: 20 root nouns
| Latin | Meaning | Example |
|---|---|---|
| cavitas | cavity, hollow space | cavitas nasi (nasal cavity) |
| angulus | angle | angulus sterni (sternal angle) |
| margo | border, margin | margo anterior (anterior border) |
| planum | plane, flat surface | planum transpyloricum (transpyloric plane) |
| spatium | space | spatium intercostale (intercostal space) |
| linea | line | linea medioclavicularis (midclavicular line) |
| arcus | arch | arcus palmaris profundus (deep palmar arch) |
| regio | region | regio epigastrica (epigastric region) |
| processus | process, projection | processus xiphoideus (xiphoid process) |
| fossa | pit, shallow depression | fossa poplitea (popliteal fossa) |
| foramen | opening, hole | foramen magnum |
| sulcus | groove | sulcus centralis (central sulcus) |
| fissura | cleft, fissure | fissura horizontalis (horizontal fissure of the right lung) |
| crista | crest, ridge | crista iliaca (iliac crest) |
| spina | spine, sharp projection | spina scapulae (spine of the scapula) |
| tuberculum | small rounded projection | tuberculum majus (greater tubercle) |
| incisura | notch | incisura jugularis (jugular notch) |
| plica | fold | plica glossoepiglottica (glosso-epiglottic fold) |
| recessus | recess | recessus costodiaphragmaticus (costodiaphragmatic recess) |
| trigonum | triangle | trigonum clavipectorale (clavipectoral triangle) |
Parts of a structure
| Latin | Meaning | Example |
|---|---|---|
| caput | head | caput humeri (head of the humerus) |
| collum | neck | collum chirurgicum humeri (surgical neck of the humerus) |
| corpus | body | corpus sterni (body of the sternum) |
| facies | surface, face | facies articularis (articular surface) |
| apex | tip | apex cordis (apex of the heart) |
| basis | base | basis cranii (base of the skull) |
Tissues, organs and tubes
| Latin | Meaning | Example |
|---|---|---|
| cartilago | cartilage | cartilago cuneiformis (cuneiform cartilage of the larynx) |
| costa | rib | costa cervicalis (cervical rib) |
| atrium | atrium (literally "entrance hall") | atrium dextrum (right atrium) |
| ductus | duct | ductus cysticus (cystic duct) |
| hiatus | gap, opening | hiatus oesophageus (oesophageal hiatus) |
| musculus, nervus, arteria, vena | muscle, nerve, artery, vein | vena jugularis externa (external jugular vein) |
Position words: 14 adjectives you'll read every day
| Latin | Meaning |
|---|---|
| dexter / dextra / dextrum | right |
| sinister / sinistra / sinistrum | left |
| anterior / posterior | front / back |
| superior / inferior | upper / lower |
| medialis / lateralis | toward / away from the midline |
| profundus / superficialis | deep / superficial |
| internus / externus | internal / external |
| major / minor | larger / smaller |
| recurrens | turning back (nervus laryngeus recurrens) |
| imus / ima / imum | lowest (arteria thyroidea ima) |
| chirurgicus / chirurgicum | surgical (collum chirurgicum) |
Then there are adjectives that simply mean "belonging to" a body part: radialis (of the radius), ulnaris (of the ulna), mentalis (of the chin, mentum), nasalis (of the nose), sacralis (of the sacrum), cervicalis (of the neck), popliteus/poplitea (of the back of the knee).
Rule 1: adjectives agree with their noun
Latin nouns have a gender (masculine, feminine or neuter), and the adjective changes its ending to match. That's why you meet the same word in three forms:
- ventriculus dexter (masculine) → right ventricle
- arteria dextra (feminine) → right artery
- atrium dextrum (neuter) → right atrium
So "dextrum ne demek?" has the same answer as "dexter ne demek?": it means right. The ending only tells you the gender of the noun next to it.
Rule 2: the genitive means "of"
Many second words are genitives, the Latin "of" form:
- carpi = of the carpus (wrist): musculus flexor carpi radialis, the radial flexor of the wrist
- sterni = of the sternum: angulus sterni
- nasi = of the nose: cavitas nasi
- scapulae = of the scapula: spina scapulae
- humeri = of the humerus: caput humeri
Spotting the genitive tells you which structure is the "owner" and which is the part.
How to actually memorize these
- Learn roots, not whole names. 40 roots unlock thousands of terms. Make one flashcard per root with two examples, not one card per structure.
- Translate every new term out loud the first time you meet it: "plica glossoepiglottica: fold between the tongue and the epiglottis."
- Use spaced repetition. Roots are ideal for it because each one is short and reused constantly. Our article on the science of spaced repetition in medical school explains why the spacing matters.
- Tie the term to a structure you can picture or touch. Find the sternal angle on yourself while you learn angulus sterni.
- Revisit a region's terms the week of its exam, then again a month later.
For a full routine, see our guide on how to study anatomy in medical school.
Look up any term in seconds
Finito's medical glossary explains anatomy terms with their Latin forms, and the Turkish glossary has entries such as cavitas nasalis, angulus sterni and spatium intercostale. Inside the app, the Medical Dictionary covers more than 250,000 terms, and you can turn your own anatomy lectures into spaced-repetition flashcards in minutes. Start free in your browser or get the app.
FAQ
Why is anatomy taught in Latin?
Because the international standard, Terminologia Anatomica, uses Latin as its official language so that every country shares one set of names. National-language equivalents, including English, are listed alongside.
What does cavitas mean in anatomy?
Cavitas means cavity, a hollow space, as in cavitas nasi (nasal cavity) or cavitas oris (oral cavity).
What does angulus mean?
Angulus means angle, as in angulus sterni, the sternal angle where the manubrium meets the body of the sternum.
What is the difference between margo and linea?
Margo is the edge or border of a structure (e.g. the anterior border of a bone). Linea is a line, either a ridge on a bone or an imaginary reference line such as the midclavicular line.
Why do I see dexter, dextra and dextrum?
They are the masculine, feminine and neuter forms of the same adjective, "right". The ending matches the gender of the noun it describes.
Sources
- FIPAT. Terminologia Anatomica, 2nd edition (TA2). Federative International Programme for Anatomical Terminology, 2019.
- FIPAT. TA2 front matter: principles and use of Latin terms.
- Dunlosky J, Rawson KA, Marsh EJ, Nathan MJ, Willingham DT. Improving students' learning with effective learning techniques. Psychological Science in the Public Interest. 2013;14(1):4–58. doi:10.1177/1529100612453266