- A small knotlike protuberance.
- Anatomy. A small mass of tissue or aggregation of cells.
- Botany. A small knoblike outgrowth, as those found on the roots of many leguminous plants.
- Mineralogy. A small rounded lump of a mineral or mixture of minerals, usually harder than the surrounding rock or sediment.
[Middle English, from Latin nōdulus, diminutive of nōdus, knot.]
nodular nod'u·lar (nŏj'ə-lər) or nod'u·lose' (-lōs') or nod'u·lous (-ləs) adj.






