| 单词 | protonema |
| 释义 | protonema —protonemal, adj. /proh'teuh nee"meuh/, n. , pl. protonemata /-meuh teuh/. Bot. a primary, usually filamentous structure produced by the germination of the spore in mosses and certain related plants, and from which the leafy plant which bears the sexual organs arises as a lateral or terminal shoot. [1855-60; < NL < Gk proto- PROTO- + nêma thread] |
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