| Word | Definitions | Synonyms |
|---|---|---|
| ceras | (noun) one of the often brightly colored and branching hornlike structures on the back of the nudibranch (and other related mollusks) that serve as gills | - |
| dinoceras | (noun) a variety of dinocerate | Synonyms: uintathere |
| teras | (noun) (medicine) a grossly malformed and usually nonviable fetus | Synonyms: monster |