placentateadj.n.

Brit.

/pləˈsɛnteɪt/, U.S.

/pləˈsɛnˌteɪt/

Origin: Formed within English, by derivation. Etymons: placenta n., -ate suffix².

Etymology: < placenta n. + -ate suffix². Compare earlier placental adj., placentary adj., and placentiferous adj. With use as noun compare earlier placental n., placentalian n., and placentary n. 2.

Zoology. Now rare.

A. adj.

Of or relating to a placenta; characterized by the development of a placenta; placental.

ΚΠ

1881 Mind 6 466 Prof. Huxley regards the insectivora as the central group of placental mammals, and therefore their brain may be considered as probably representing the primitive placentate form.

1928 Sci. Monthly Dec. 519/2 The placentate method of nourishing the embryo.

B. n.

A placental mammal, a eutherian.

ΚΠ

1893 Science 28 Apr. 236/1 In marsupials, cetaceans, and edentates (with other placentates), the existence of two series of teeth was now abundantly proven.

1930 W. M. Mann Wild Animals in & out of Zoo xviii. 217 Marsupials are in general inferior in intelligence to similar forms among the placentates.

1933 Q. Rev. Biol. 8 351/1 In most placentates the ovum sooner or later develops a more intimate connection with the maternal bloodstream.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

单词	placentate
释义	placentateadj.n. Brit. /pləˈsɛnteɪt/, U.S. /pləˈsɛnˌteɪt/ Origin: Formed within English, by derivation. Etymons: placenta n., -ate suffix². Etymology: < placenta n. + -ate suffix². Compare earlier placental adj., placentary adj., and placentiferous adj. With use as noun compare earlier placental n., placentalian n., and placentary n. 2. Zoology. Now rare. A. adj. Of or relating to a placenta; characterized by the development of a placenta; placental. ΚΠ 1881 Mind 6 466 Prof. Huxley regards the insectivora as the central group of placental mammals, and therefore their brain may be considered as probably representing the primitive placentate form. 1928 Sci. Monthly Dec. 519/2 The placentate method of nourishing the embryo. B. n. A placental mammal, a eutherian. ΚΠ 1893 Science 28 Apr. 236/1 In marsupials, cetaceans, and edentates (with other placentates), the existence of two series of teeth was now abundantly proven. 1930 W. M. Mann Wild Animals in & out of Zoo xviii. 217 Marsupials are in general inferior in intelligence to similar forms among the placentates. 1933 Q. Rev. Biol. 8 351/1 In most placentates the ovum sooner or later develops a more intimate connection with the maternal bloodstream. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.n.1881
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