| 单词 | episperm |
| 释义 | episperm (once / 1313257 pages) n WORD FAMILY episperm USAGE EXAMPLESEpisperm, the skin or coat of a seed, especially the outer coat. Gray, Asa, The Elements of Botany—For Beginner...(2010) The ovulum has, according to him, but one covering, which in the ripe seed he calls episperm. King, Phillip Parker, Narrative of a Survey of the Intert...(2010) n protective outer layer of seeds of flowering plants Syn|Hyper seed coat, testa reproductive structure the parts of a plant involved in its reproduction |
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