“placentule”的英文意思

单词

placentule

释义

placentule Bot.|pləˈsɛntjuːl|
[ad. mod.L. placentula, dim. of placenta: see -ule.]
A small placenta (but in quot. 1826 applied to a cotyledon: cf. cotyledon 3).
1677Grew Anat. Fruits v. §13 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.1826Good Bk. Nat. (1834) I. 164 The cotyledon appears..necessary for the..growth of the seed, and may hence be denominated its lungs or placentule.1858Mayne Expos. Lex., Placentula,..a little placenta: a placentule.

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