| 单词 | tapetum |
| 释义 | Word Frequency tapetum(təˈpiːtəm) nounWord forms: plural -ta (-tə) 1. a layer of nutritive cells in the sporangia of ferns and anthers of flowering plants that surrounds developing spore cells 2. a. a membranous reflecting layer of cells in the choroid of the eye of nocturnal vertebrates b. a similar structure in the eyes of certain nocturnal insects 3. anatomy a covering layer of cells behind the retina of the eye Derived forms tapetal (taˈpetal) adjective Word origin C18: from New Latin, from Medieval Latin: covering, from Latin tapēte carpet, from Greek tapēs carpet |
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