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Encyclopedic overview
Nodule may refer to: Nodule (geology), a small rock or mineral cluster Manganese nodule, a metallic concretion found on the seafloor Nodule (medicine), a small aggregation of cells Root nodule, a growth on the roots of legumes A feature of mollusc sculpture Nodule of vermis, an external feature of the cerebellum
Excerpted from Wikipedia’s “Nodule” article, available under the CC BY-SA 4.0 licence.