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[noj-ool] /ˈnɒdʒ ul/

a small node, knot, or knob.
a small, rounded mass or lump.
Botany. a tubercle.
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
(anatomy) any small node or knoblike protuberance
a small rounded lump of rock or mineral substance, esp in a matrix of different rock material

early 15c., from Latin nodulus “small knot,” diminutive of nodus “knot” (see net (n.)). Related: Nodulated; nodulous; nodulation.

nodule nod·ule (nŏj’ōōl)

nod’u·lar (nŏj’ə-lər) or nod’u·lose’ (-lōs’) or nod’u·lous (-ləs) adj.


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  • Nodule of semilunar valve

    nodule of semilunar valve n. A nodule located at the center of the free border of each semilunar valve at the beginning of the pulmonary artery and aorta. Also called Arantius’ nodule, Bianchi’s nodule, Morgagni’s nodule.

  • Nodulous

    [noj-uh-luh s] /ˈnɒdʒ ə ləs/ adjective 1. having .

  • Nodulus

    [noj-uh-luh s] /ˈnɒdʒ ə ləs/ noun, plural noduli [noj-uh-lahy, -lee] /ˈnɒdʒ əˌlaɪ, -ˌli/ (Show IPA). Anatomy. 1. a small node, especially on the vermis of the cerebellum. nodulus nod·u·lus (nŏj’ə-ləs) n. pl nod·u·li (-lī’)

  • Nodus

    [noh-duh s] /ˈnoʊ dəs/ noun, plural nodi [noh-dahy, -dee] /ˈnoʊ daɪ, -di/ (Show IPA) 1. a difficult or intricate point, situation, plot, etc. /ˈnəʊdəs/ noun (pl) -di (-daɪ) 1. a problematic idea, situation, etc 2. another word for node nodus no·dus (nō’dəs) n. pl. no·di (-dī) A circumscribed mass of tissue; a node.

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