| 单词 | theca |
| 释义 | Word Frequency theca(ˈθiːkə) nounWord forms: plural -cae (-siː) 1. botany an enclosing organ, cell, or spore case, esp the capsule of a moss 2. zoology a hard outer covering, such as the cup-shaped container of a coral polyp Derived forms thecal (ˈthecal) or thecate (ˈthecate) adjective Word origin C17: from Latin thēca, from Greek thēkē case; related to Greek tithenai to place |
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