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only in Gen. sing. Besides it should be remembered that one-syllable nouns are
written in full in Nom. sing. and Gen. sing., e. g.: cor, cordis n (heart); dens, dentis
m (tooth); pars, parties f (part); os, ossis n (bone); os, oris n (mouth).
Depending on the stem ending, the third declension nouns are subdivided into
three types: consonant, vowel and mixed ones.
The consonant type.
The imparisyllabic nouns of all genders, whose stem ends in one consonant,
belong to the consonant type. This type is the basic and most widely spread one. E.
g.: flos, floris m; radix, īcis f; os, oris n.
Table № 1.
The case endings of the consonant type
Casus Singularis Pluralis
Nom.
Gen.
Dat.
Acc.
Abl.
different
-is
-i
-em (m, f), as Nom. (n)
-e
-es (m, f), -a (n)
-um
-ĭbus
-es (m, f), -a (n)
-ĭbus
The vowel type.
The neuter nouns having the endings -e, -al, -ar in Nom. sing. belong to the
vowel type. E. g.: rete, is n (net), animal, ālis n (animal), cochlear, āris n (spoon).
The attention should be paid to the noun hepar, ătis n (liver) which is declined
according to the consonant type.
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