| 释义 |
polycotyledon Bot.|ˌpɒlɪkɒtɪˈliːdən|
[f. mod.L. Polycotylēdonēs (pl.): cf. dicotyledon.]
A plant of which the seed contains more than two cotyledons. So ˌpolycotyˈledonary, ˌpolycotyˈledonous adjs., having more than two cotyledons in the seed, as many Gymnosperms; ˌpolycotyˈledony, the condition of being polycotyledonous.
[1760J. Lee Introd. Bot. iii. xi. (1765) 199 Polycotyledones, with many Cotyledones.] 1813Sir H. Davy Agric. Chem. iii. (1814) 70 These plants are called polycotyledonous. 1828Webster, Polycotyledon. 1880Gray Struct. Bot. ii. (ed. 6) 23 The Polycotyledonous Embryo is one having a whorl of more than two seed-leaves. |