子叶 zǐyè cotyledon Origin Definitions Defs Strokes Stroke Words Sentences Sents 单子叶 dānzǐyè monocotyledon A type of plant characterized by having a single embryonic leaf, including species such as grasses, orchids, and lilies.双子叶 shuāngzǐyè dicotyledon dicotyledon (plant family distinguished by two embryonic leaves, includes daisies, broadleaved trees, herbaceous plants)