a small knot, lump, or node - Also called: root nodule
any of the knoblike outgrowths on the roots of clover and many other legumes: contain bacteria involved in nitrogen fixation any small node or knoblike protuberance a small rounded lump of rock or mineral substance, esp in a matrix of different rock material
WordReference Random House Unabridged Dictionary of American English © 2026
nod•u•lous
(noj′ə ləs),USA pronunciation adj.
WordReference Random House Learner's Dictionary of American English © 2026- Anatomyhaving nodules.
- nodule + -ous 1835–45
WordReference Random House Unabridged Dictionary of American English © 2026
nod•ule
(noj′o̅o̅l),USA pronunciation n.
- a small node, knot, or knob.
- Pathology, Anatomya small, rounded mass or lump.
- Botanya tubercle.
- Latin nōdulus a little knot, equivalent. to nōd(us) node + -ulus -ule
- 1590–1600
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