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Latin language · Russian-Latin Dictionary

Russian-Latin Medical Dictionary: Abbreviations and Grammar

Medical Latin Dictionary is a structured reference guide where each term is accompanied by strict grammatical labels. Understanding the conventional abbreviations for noun genders and verb conjugations is the foundation for correctly constructing anatomical phrases and writing clinical diagnoses.

Masculine genderIndicated in dictionaries by the letter m (masculinum).
Feminine genderHas the dictionary label f (femininum).
Neuter genderAbbreviated using the letter n (neutrum).
ConjugationsRoman numerals I, II, and III indicate the verb conjugation type.
6 min readFor medical studentsUpdated 09/24/2026
Material prepared by WhiteCoat Pro editorial team based on platform study guidesReviewed by medical editor: Aulov A. A., general practitioner · 09/24/2026

Symbols and Dictionary Structure

Any Russian-Latin reference guide is based on a strict system of abbreviations. The key markers are noun gender indicators. Traditionally, three genders are distinguished: masculinum (masculine, denoted by the letter m), femininum (feminine, abbreviation f), and neutrum (neuter, letter n). In addition, verb conjugation types are always specified using Roman numerals: I, II, III. For ease of searching, dictionaries also feature a cross-reference system. If a term has a more common synonym, a reference is provided. For example, when searching for the word "fibrous", the dictionary refers to the term "fibrosus", while the concept of "protrusion" is suggested to be looked up under the entry "diverticulum".

Nouns: Anatomy and Clinic

Medical vocabulary includes a vast layer of terms. The first block consists of anatomical structures (bones, muscles, internal organs). For example, eyelid is translated as palpěbra, ae f, and acetabulum as acetabŭlum, i n. Synonyms exist for some concepts. Thus, apex or top is designated as vertex, ĭcis m or culmen, ĭnis n, while for the term "porta" (hilum), porta, ae f and hilum, i n are used. Internal organs in Latin are viscus, ĕris n, but the Greek equivalent splanchnon, i n is also frequently used (usually in the plural).

Anatomical structures also include:

  • trochanter — trochanter, ēris m
  • sinciput, upper part of the head — sincĭput, ĭtis n
  • maxilla, upper jaw — maxilla, ae f
  • rotator muscle — rotātor, ōris m
  • erector muscle — erector, ōris m
  • axis, second cervical vertebra — axis, is m
  • thymus gland — thymus, i m
  • vagina — vagīna, ae f
  • thenar, thenar eminence — thenar, āris n
  • ramus, branch — ramus, i m
  • aqueduct — aqueductus, us m
  • incisure, notch — incisūra, ae f

The second major block is Clinical and General Terms. Inflammation is translated as inflammatio, ōnis f, dislocation as luxatio, ōnis f, and prolapse of an internal organ as prolapsus, us m. This category also includes substance names (substantia, ae f): water (aqua, ae f, wine (vinum, i n, virus (virus, i n, vitamin (vitamīnum, i n) and vinilin (vinylīnum, i n). The description of characteristics may require words such as "age" (aetas, ātis f), "size" (magnitūdo, ĭnis f) and "time" (tempus, ŏris n). The word tempus can mean both "time" and "temple".

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Adjectives and Participles

Adjectives are divided into two groups depending on their declension. 1st-2nd declension adjectives have the endings -us, -a, -um. Examples from the dictionary: "venous" (venōsus, a, um), "extrauterine" (extrauterīnus, a, um), "internal" (internus, a, um), "trochanteric" (trochanterĭcus, a, um), "impacted" (impactus, a, um), "inflammatory" (inflammatorius, a, um), and "secondary" (secundarius, a, um).

3rd declension adjectives have the endings -is, -e. These include: "fusiform" (fusiformis, e), "temporal" (temporālis, e), "intra-articular" (intraarticulāris, e), "probable" (probabĭlis, e), "maxillary" (maxillāris, e), "vernal, spring" (vernālis, e), "vestibular" (vestibulāris, e), "vaginal" (vaginālis, e), and "intralobular" (intralobulāris, e).

Some words have translation variants from different declensions. For example, "coronary" can be translated as coronarius, a, um or as coronālis, e. The term "aqueous" has the variants aquōsus, a, um and hydrĭcus, a, um.

Forms in the comparative degree (e.g., "superior" — superior, ius) and participles (endings -ns, -ntis) are distinguished separately: "recurrent" (recurrens, entis), "ascending" (ascendens, entis), "accessory, assisting" (adjŭvans, antis), "eminent, protruding" (emĭnens, entis), and "efferent" (effĕrens, entis).

Verbs in the Medical Dictionary

Each verb in the dictionary indicates its conjugation. For example, "to give, to yield" (do, āre I) belongs to the first conjugation, and "to stand out, to project" (eminĕo, ēre II) belongs to the second. Verbs belonging to the third conjugation include "to take" (recipio, ĕre III), "to return" (recurro, ĕre III), and "to ascend" (ascendo, ĕre III). Irregular verbs that do not follow standard conjugation rules also occur in Latin. An example of such a word in medical terminology is the verb "to carry away, to effer" — effĕro, efferre.

Briefly: answers to topical questions

What is the difference in the usage of the terms viscus and splanchnon to designate internal organs?

The difference is that the Greek term splanchnon is usually used in the plural (splanchna). Its Latin counterpart is the plural form viscera (from viscus).

TermOriginUsage Characteristic
viscus, ĕris nLatinCan be used in the singular, plural is viscera
splanchnon, i nGreekUsually used in the plural (splanchna)

Which conjugation does the verb effĕro belong to, and how is it conjugated in the present tense?

The verb effĕro (efferre) is an irregular verb and therefore does not belong to standard conjugations. Sources do not provide a table or rules for its present tense conjugation.

However, it is known to translate as "to carry away / efferent". The present active participle is formed from this verb:

  • efferent (effĕrens, entis) — a form used in anatomical terminology (e.g., vasa efferentia).

How to determine the declension of a Latin noun from its dictionary form?

The declension of a Latin noun is determined by the ending of the genitive singular (Genitivus singularis). This ending is the second component of the word's dictionary entry.

A noun dictionary entry consists of three elements:

  • Nominative case (Nom. sg.) — the singular form.
  • Genitive ending (Gen. sg.) — the main indicator for determining the declension.
  • Gender — the grammatical gender of the noun (e.g., m, f, n).

How are the genders distributed for 3rd declension adjective endings -is and -e?

For third-declension adjectives with two endings, the form in -is is common to both masculine and feminine genders, while the form in -e is used for the neuter gender.

EndingGenusExample
-isMasculine and feminine genderbrevis (short, m./f.)
-eNeuter genderbreve (short, n.)

This distribution is typical for the dictionary entry, where one common ending is specified for masculine and feminine, and another for neuter.

How to memorize

The "three elements" rule will help remember the basic grammar of a dictionary entry: every noun in the dictionary always has the full word form (nominative case), the genitive ending, and the letter indicating gender (m, f, or n).

Class and exam questions

How to find the gender of a noun in a dictionary?

Gender is always indicated by a single letter after the word itself and the genitive ending: m (masculine), f (feminine), or n (neuter).

What is the difference between adjectives ending in -us, -a, -um and those ending in -is, -e?

The former belong to the 1st and 2nd declensions (e.g., internus, a, um), while the latter belong to the 3rd declension (e.g., fusiformis, e).

How is the word "coronal" translated?

Depending on the context, either the 1st-2nd declension adjective coronarius, a, um or the 3rd declension adjective coronālis, e is used.

What do the Roman numerals I, II, III next to verbs mean?

They indicate the number of the conjugation type. For example, recipio, ĕre III is a third-conjugation verb.

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What else to study on this topic

  • Declension features of Latin participles ending in -ns, -ntis
  • Comparative degree of adjectives using superior as an example
  • Irregular Latin verbs in medical practice
  • Rules for using Greek synonyms (viscus and splanchnon)
  • Polysemy of terms: one word for anatomy and time (tempus)

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