'Mammalian' definitions:

Definition of 'mammalian'

From: WordNet
adjective
Of or relating to the class Mammalia
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 [syn: mammal, mammalian]

Definition of 'Mammalian'

From: GCIDE
  • Mammalian \Mam*ma"li*an\, a. Of or pertaining to the Mammalia or mammals. [1913 Webster]