| Word | Definitions | Synonyms |
|---|---|---|
| mammal | (noun) any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk | Synonyms: mammalian |
| protomammal | (noun) probably warm-blooded; considered direct ancestor of mammals | Synonyms: therapsid |
| sarcolemmal | (adjective) of or relating to the sarcolemma | - |