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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 pro·thal·lus /(ˌ)proˈθæləs/
 原葉體

From: Webster's Revised Unabridged Dictionary (1913)

 Pro·thal·lus n.; pl. Prothalli   Bot. The minute primary growth from the spore of ferns and other Pteridophyta, which bears the true sexual organs; the oophoric generation of ferns, etc.
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