of, pertaining to, or characterized by nodules.
shaped like or occurring in nodules: a nodular concretion.

1785–95; nodule + -ar1

multinodular, adjective
postnodular, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
nodule (ˈnɒdjuːl)
1.  a small knot, lump, or node
2.  Also called: root nodule any of the knoblike outgrowths on the roots of clover and many other legumes: contain bacteria involved in nitrogen fixation
3.  anatomy any small node or knoblike protuberance
4.  a small rounded lump of rock or mineral substance, esp in a matrix of different rock material
[C17: from Latin nōdulus, from nōdus knot]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Colloid nodular goiters are also known as endemic goiters.
Toxic nodular goiter involves an enlarged thyroid gland that contains a small rounded growth or growths called nodules.
The thyroid is symmetric and red-brown, without cystic or nodular change.
Nodular melanoma usually starts as a raised area that is dark blackish-blue or bluish-red.
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