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; see ned- in Indo-European roots.] nod'u·lar (nŏj'ə-lər), nod'u·lose' (-lōs'), nod'u·lous (-ləs) adj.
[noj-uh-luh
s] 