placentoidadj.

Brit.

/pləˈsɛntɔɪd/, U.S.

/pləˈsɛnˌtɔɪd/

Origin: Formed within English, by derivation. Etymons: placenta n., -oid suffix.

Etymology: < placenta n. + -oid suffix. Compare French placentoïde (1884 or earlier).

Zoology, Botany, and Medicine.

Resembling a placenta, or placental tissue.

ΘΚΠ

the world > life > biology > physical aspects or shapes > shape > [adjective] > other shapes

plummet-like1605

semilunar1681

cordated1698

cordate1760

obcordate1775

club-shaped1776

flabelliform1777

obovate1785

button-shaped1791

clavate1803

placentiform?a1808

obovoid1819

valviform1819

constricted1826

vulviform1829

mitrate1836

bipenniform1842

sandaliform1848

scopiform1852

obclavate1856

obcordiform1857

oboval1857

utriform1860

broadsword-shaped1870

placentoid1885

hypsiloid1886

1885 Science 27 Mar. 257/2 It is..quite intelligible, that in an ovoviviparous vertebrate, where the egg has a thin membranous shell, the placentoid organ should be attached to the internal surface of the oviduct.

1942 J. Needham Biochem. & Morphogenesis iii. 548 The others, developing ovoviviparously within the maternal body (but without placentoid attachments) absorb 25, 60 and 97% respectively of their ash from the maternal blood stream.

1967 Bot. Gaz. 128 94/1 These two layers stain densely, and in cross-section they contrast sharply with a group of 6–12 highly vacuolate, lightly staining cells (placentoid) that lie immediately internal to them.

1995 Human Pathol. 26 78/1 We do not know the histogenesis of placentoid bullous lesion of the lung.

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

单词	placentoid
释义	placentoidadj. Brit. /pləˈsɛntɔɪd/, U.S. /pləˈsɛnˌtɔɪd/ Origin: Formed within English, by derivation. Etymons: placenta n., -oid suffix. Etymology: < placenta n. + -oid suffix. Compare French placentoïde (1884 or earlier). Zoology, Botany, and Medicine. Resembling a placenta, or placental tissue. ΘΚΠ the world > life > biology > physical aspects or shapes > shape > [adjective] > other shapes plummet-like1605 semilunar1681 cordated1698 cordate1760 obcordate1775 club-shaped1776 flabelliform1777 obovate1785 button-shaped1791 clavate1803 placentiform?a1808 obovoid1819 valviform1819 constricted1826 vulviform1829 mitrate1836 bipenniform1842 sandaliform1848 scopiform1852 obclavate1856 obcordiform1857 oboval1857 utriform1860 broadsword-shaped1870 placentoid1885 hypsiloid1886 1885 Science 27 Mar. 257/2 It is..quite intelligible, that in an ovoviviparous vertebrate, where the egg has a thin membranous shell, the placentoid organ should be attached to the internal surface of the oviduct. 1942 J. Needham Biochem. & Morphogenesis iii. 548 The others, developing ovoviviparously within the maternal body (but without placentoid attachments) absorb 25, 60 and 97% respectively of their ash from the maternal blood stream. 1967 Bot. Gaz. 128 94/1 These two layers stain densely, and in cross-section they contrast sharply with a group of 6–12 highly vacuolate, lightly staining cells (placentoid) that lie immediately internal to them. 1995 Human Pathol. 26 78/1 We do not know the histogenesis of placentoid bullous lesion of the lung. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022). < adj.1885
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