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单词 eutherian
释义 eutherian, n. and a. Zool.|juːˈθɪərɪən|
[f. mod.L. Eutheria (T. N. Gill 1872, in Smithsonian Misc. Coll. XI. p. iii), f. Gr. εὐ- eu- + θηρία beasts.]
A. n. A member of the Eutheria, an infraclass which comprises the placental mammals.
B. adj. Of or pertaining to this group.
1880T. H. Huxley in Proc. Zool. Soc. 657 An undifferentiated Eutherian.Ibid. 658 Eutherian forms with deciduate placentation.1894–5[see metatheria n. pl.].1950J. Z. Young Life of Vertebrates xxi. 545 All the eutherians (placentals) have been derived from small, perhaps nocturnal, insectivorous or omnivorous animals.1969L. H. Matthews Life of Mammals I. ix. 197 The introduction of European eutherian predators..have [sic] played havoc with the metatherian fauna of Australia.
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