| 单词 | menadione | 
| 释义 | Word Frequency menadione(ˌmɛnəˈdaɪəʊn) noun a yellow crystalline compound used in fungicides and as an additive to animal feeds. Formula: C11H8O2Also: vitamin K3 Word originC20: from me(thyl) + na(phtha) + di-1 + -one | 
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