| 单词 | cotyledon |
| 释义 | cotyledon —cotyledonal, cotyledonary /kot'l eed"n er'ee/, cotyledonous, adj. /kot'l eed"n/, n. Bot. 1. the primary or rudimentary leaf of the embryo of seed plants. 2. Anat. any of several lobules of the placenta. [1535-45; < L: navelwort < Gk kotyledón a plant (prob. navelwort), lit., a cuplike hollow, deriv. of kotýle cup] |
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