Jisho

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Noun
1. root nodule
Wikipedia definition
2. Root noduleRoot nodules occur on the roots of plants that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. This process has evolved multiple times within the Fabaceae, as well as in other species found within the Rosid clade.
Read “Root nodule” on English Wikipedia
Read “根粒” on Japanese Wikipedia
Read “Root nodule” on DBpedia
Other forms
根瘤 【こんりゅう】

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