| 单词 | coleoptile |
| 释义 | coleoptile /koh'lee op"til, kol'ee-/, n. Bot. (in grasses) the first leaf above the ground, forming a sheath around the stem tip. [1865-70; < NL coleoptilum < Gk koleó(n) sheath, scabbard + ptílon soft feathers, down] |
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