† placentulen.

Forms:

α. 1600s–1700s placentula (in Latin form), 1600s–1700s placentulae (plural).

β. 1700s–1800s placentule.

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

Etymology: < placenta n. (see sense 2 at that entry) + -ule suffix. With the form placentula compare -ula suffix. Compare also post-classical Latin placentula small flat bread or cake (from 1287 in British sources), tablet (1653 or earlier; apparently not found in botanical sense ‘cotyledon’ until later). N.E.D. (1907) gives the pronunciation as (plăse·ntiul) /pləˈsentjuːl/.

Botany and Zoology. Obsolete.

A small placenta; a small structure with the function of a placenta; (Botany) = cotyledon n. 3.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > style or pistil and related parts > carpel and placenta

placenta1681

placentule1682

seedbed1720

trophosperm1819

replum1828

carpel1835

spermaphore1847

hemicarp1854

spermophore-

1682 N. Grew Anat. Plants iv. iii. v. 188 A great Parenchymous Boss, which is, as it were, the Bed or Placentula of the Seeds; which lie all over it, as in a Strawberry.

1727 P. Shaw & E. Chambers tr. H. Boerhaave New Method Chem. 157 The two placentulæ, or cotyledons of a seed.

1734 Med. Ess. & Observ. (Philos. Soc. Edinb.) II. 169 I cut the Placentulæ, and found them internally Liver-like.., full of Canals and Papillulæ.

1826 J. M. Good Bk. Nature I. viii. 185 The cotyledon appears..necessary for the..growth of the seed, and may hence be denominated its lungs or placentule.

1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Placentula,..a little placenta: a placentule.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online December 2020).

单词	placentule
释义	† placentulen. Forms: α. 1600s–1700s placentula (in Latin form), 1600s–1700s placentulae (plural). β. 1700s–1800s placentule. Origin: Formed within English, by derivation. Etymons: placenta n., -ule suffix. Etymology: < placenta n. (see sense 2 at that entry) + -ule suffix. With the form placentula compare -ula suffix. Compare also post-classical Latin placentula small flat bread or cake (from 1287 in British sources), tablet (1653 or earlier; apparently not found in botanical sense ‘cotyledon’ until later). N.E.D. (1907) gives the pronunciation as (plăse·ntiul) /pləˈsentjuːl/. Botany and Zoology. Obsolete. A small placenta; a small structure with the function of a placenta; (Botany) = cotyledon n. 3. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > style or pistil and related parts > carpel and placenta placenta1681 placentule1682 seedbed1720 trophosperm1819 replum1828 carpel1835 spermaphore1847 hemicarp1854 spermophore- 1682 N. Grew Anat. Plants iv. iii. v. 188 A great Parenchymous Boss, which is, as it were, the Bed or Placentula of the Seeds; which lie all over it, as in a Strawberry. 1727 P. Shaw & E. Chambers tr. H. Boerhaave New Method Chem. 157 The two placentulæ, or cotyledons of a seed. 1734 Med. Ess. & Observ. (Philos. Soc. Edinb.) II. 169 I cut the Placentulæ, and found them internally Liver-like.., full of Canals and Papillulæ. 1826 J. M. Good Bk. Nature I. viii. 185 The cotyledon appears..necessary for the..growth of the seed, and may hence be denominated its lungs or placentule. 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Placentula,..a little placenta: a placentule. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online December 2020). < n.1682
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