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Thesaurus: mammalia

The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother.

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n. pl. The class="def-link" href="https://vividlex.com/word/highest">highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother.
The class="def-link" href="https://vividlex.com/word/highest">highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother. Note: Mammalia are divided into threes subclasses; --I. Placentalia. This subclass embraces all the higher orders, including man. In these the fetus is attached to the uterus by a placenta. II. Marsupialia. In these no placenta is formed, and the young, which are born at an early state of development, are carried for a time attached to the teats, and usually protected by a marsupial pouch. The opossum, kangaroo, wombat, and koala are examples. III. Monotremata. In this group, which includes the genera Echidna and Ornithorhynchus, the female lays large eggs resembling those of a bird or lizard, and the young, which are hatched like those of birds, are nourished by a watery secretion from the imperfectly developed mammæ.
The class="def-link" href="https://vividlex.com/word/highest">highest class of Vertebrata. The young are nourished for atime by milk, or an analogous fluid, secreted by the mammary glandsof the mother.
n warm-blooded vertebrates characterized by mammary glands in the female