Latin Nouns and Adjectives


Noun Endings

In many languages, nouns and their modifying adjectives are inflected: They have different endings (or in some cases very different forms) in different cases. In Latin, there are seven cases: nominative, vocative (nominative of address: "Et tu, Brute?"), genitive (possessive case, meaning "of _______"), three different objective cases (dative, accusative, ablative), and locative (ablative of place). In Cell Structure and Function, we shall be concerned only with the nominative case and (to a minor extent) the genitive case.

Latin nouns and adjectives are inflected in any of several different ways, depending on the stem of the word. We will concern ourselves only with three of these noun and adjective forms: "a-stem", "o-stem", and "consonant-stem".

Latin nouns have gender (feminine, masculine, or neuter). Adjectives are inflected in the gender form to agree with the noun they modify. Most a-stem nouns are feminine. Most o-stem nouns are masculine or neuter. Consonant-stem nouns are about evenly distributed among the three gender types. The nominative plurals of neuter nouns and adjectival forms always end in -a, thus differing from the gender forms of o-stem and consonant-stem nouns. Adjectives with vowel stems use a-stem endings for the feminine and the appropriate o-stem endings for masculine and neuter forms.

 

A-STEM FORMS

 

CONSONANT-STEM FORMS

 

Singular

Plural

 

Singular

Plural (M, F)

Plural (Neuter)

             

Nominative

-a

-ae

 

(-)

-es

-a

Genitive

-ae

-arum

 

-is

-um

-um

 

 

O-STEM FORMS

 

Masculine

 

Neuter

 

Singular

Plural

 

Singular

Plural

           

Nominative

-us (-)

-i

-um

-a

Genitive

-i

-orum

-i

-orum


Noun and Adjective Stem Changes

Most consonant-stem nouns and adjectives (and some o-stem forms) have stems slightly different from the form in the nominative singular. Most conspicuous consonant-stem words for our purposes:

 

Word

Stem

Gender

Nominative Plural

Meaning

           
 

NOUNS

       
 

apex

apic-

M

apices

point

 

cadaver

cadaver-

M

cadaveres

corpse

 

calix

calic-

M

calices

cup

 

corpus

corpor-

N

corpora

body

 

genus

gener-

N

genera

genus

 

lex

leg-

F

leges

law

 

lumen

lumin-

N

lumina

light

 

mors

mort-

F

mortes

death

 

opus

oper-

N

opera

work

 

pax

pac-

F

paces

peace

 

pes

ped-

M

pedes

foot

 

pons

pont-

M

pontes

bridge

           
 

ADJECTIVES

       
 

adherens

adherent-

 

adherentes (-a)

adhesive

 

occludens

occludent-

 

occludentes

occluding


Its All Greek to Me

The early Romans incorporated many Greek words into Latin. In most cases, these Greek words are inflected as one of the Latin stem forms, but they retain certain Greek peculiarities. These peculiarities have been retained in carry-over of these words into English and in formation of new scientific words from Greco-Roman roots. Of interest to us are neuter nouns in which the Greek form in the nominative singular has an "-on" ending; the plural is formed from the stem by addition of the ending "-a":

Singular

 

Plural

 

criterion

 

criteria

 

mitochondrion

 

mitochondria

 

phenomenon

 

phenomena

 


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