单词 | micropyle |
释义 | mi·cro·pyle ![]() n. 1. Botany A minute opening in the ovule of a seed plant through which the pollen tube usually enters. 2. Zoology A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter. [MICRO- + Greek pulē, gate.] mi′cro·pylar adj. |
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