Grammatical categories and application features
Latin verbs have standard grammatical categories: they change by person, number, tense, and mood.
However, in the medical field, especially when writing prescriptions, the use of verb forms is strictly regulated:
- Tense: exclusively the present tense (praesens) is used.
- Voice: both active (activum) and passive (passivum) voices are used.
- Mood (Modi): out of the three existing moods (indicative, imperative, and subjunctive), only the imperative (Imperativus) and subjunctive (Conjunctivus) are used in pharmaceutical prescription writing.
Four verb conjugations
In Latin, verbs are divided into four conjugations (conjugatio). The criterion for this division is the final sound of the verb stem:
- 1st conjugation: the stem ends in the vowel -a.
- 2nd conjugation: the stem ends in the vowel -e.
- 3rd conjugation: the stem ends in a consonant sound (in rare cases, in -u).
- 4th conjugation: the stem ends in the vowel -i.
Thus, the first, second, and fourth conjugations have a vocalic stem, while the third predominantly has a consonantal stem.
Infinitive form (Infinitivus)
The infinitive is the base form of the verb, which does not change by number, person, or mood. The main function of the infinitive in language learning is to help correctly identify the stem and determine which conjugation the verb belongs to.
A characteristic sign of the infinitive is the ending -re.
Rules for forming the infinitive:
- For verbs of the 1st, 2nd, and 4th conjugations, the ending -re is added directly to the stem (e.g., sterilisā-re, miscē-re, finī-re).
- For verbs of the 3rd conjugation, because the stem ends in a consonant, the connecting vowel -ĕ- is used (e.g., solv-ĕ-re).
Stem identification and dictionary form
To find the verb stem, you need to drop the infinitive ending:
- In the 1st, 2nd, and 4th conjugations, the ending -re itself is removed (e.g., sterilisāre → stem sterilisa-).
- In the 3rd conjugation, the ending is removed along with the connecting vowel: -ĕre (e.g., solvĕre → stem solv-).
In student dictionaries for medical professionals, verbs are given in a special abbreviated form that includes:
- The 1st-person singular present tense form (ending in -o).
- The end of the infinitive (the last three letters: -āre, -ēre, -ĕre, -īre).
- A Roman numeral indicating the conjugation number.
Example of a dictionary entry: steriliso, āre I — to sterilize.
Briefly: answers to topical questions
What ending do first-conjugation verbs have in their dictionary form?
In the dictionary form, first-conjugation verbs have the ending -o for the first person singular and -āre (or -are) for the infinitive. The structure of the dictionary entry includes the following elements:
- First person (-o) — the full singular present indicative active form.
- Infinitive (-āre) — the ending along with the preceding vowel (the last three letters).
- Conjugation (I) — a Roman numeral indicating the conjugation number.
What are the rules for translating imperative verbs into Russian in prescriptions?
Imperative verbs (Imperativus) are translated into Russian as a direct command addressed to the second person. Medical prescriptions predominantly use the second-person singular form.
Examples of translating prescription formulations:
- Mix, dispense, label (Misce, da, signa) — translation of singular forms.
- Sterilize (sterilisāte) — translation of the plural form.
- Dissolve! (solve) — translation of the third-conjugation singular form.
To avoid confusing the 2nd and 3rd conjugations: in the 2nd conjugation, a long "ē" stands before "re" (it is part of the stem), whereas in the 3rd conjugation, a short "ĕ" stands there (it merely connects the consonant stem and the suffix). Long "ē" is the second, short "ĕ" is the third.
Class and exam questions
In what tenses are verbs written in prescriptions?
In pharmaceutical prescriptions, verbs are always used exclusively in the present tense (praesens).
How to determine the conjugation of a verb?
The conjugation is determined by the final sound of the stem, which can be identified by dropping the ending -re (for 1st, 2nd, 4th conj.) or -ĕre (for 3rd conj.) from the infinitive.
Which moods are used in medical Latin?
Only the imperative (Imperativus) and subjunctive (Conjunctivus) moods are used in prescriptions.
What else to study on this topic
- Formation of imperative mood forms (Imperativus)
- Formation of subjunctive mood forms (Conjunctivus)
- Examples of verb usage in specific prescriptions
- Differences between active and passive voices in prescription writing
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Other topics in the section "Verb. Imperativus. Conjunctivus"
Prepared by WhiteCoat Pro faculty in accordance with the medical school curriculum. For educational purposes only.