| 单词 | nodule |
| 释义 | Word Frequency nodule(ˈnɒdjuːl) noun 1. a small knot, lump, or node 2. Also called: root nodule any of the knoblike outgrowths on the roots of clover and many other legumes: contain bacteria involved in nitrogen fixation 3. anatomy any small node or knoblike protuberance 4. a small rounded lump of rock or mineral substance, esp in a matrix of different rock material Derived forms nodular (ˈnodular) or nodulose (ˈnodulose) or nodulous (ˈnodulous) adjective Word origin C17: from Latin nōdulus, from nōdus knot |
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