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词汇 Placentalia
释义

Definition of Placentalia in English:

Placentalia

noun ˌplas(ə)nˈteɪlɪə
Zoology
  • With singular concord: a division of mammals comprising those in which the females develop a placenta, equivalent to the infraclass Eutheria. Treated as plural: placental mammals collectively; eutherians, as distinguished from marsupials and monotremes.

Origin

Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist. From scientific Latin Placentalia, use as group name of neuter plural of placentalis, adjective.

Definition of Placentalia in US English:

Placentalia

nounˌplas(ə)nˈteɪlɪə
Zoology
  • With singular concord: a division of mammals comprising those in which the females develop a placenta, equivalent to the infraclass Eutheria. Treated as plural: placental mammals collectively; eutherians, as distinguished from marsupials and monotremes.

Origin

Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist. From scientific Latin Placentalia, use as group name of neuter plural of placentalis, adjective.

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