nucleolus noun. [nju:klɪ'ǝʊlǝs] Pl. -li [-lʌɪ]. M19.
[Late Latin, dim. of NUCLEUS noun.]
Biology. A minute rounded body within the nucleus of a cell, associated with RNA synthesis. Also occas., a paranucleus.

■ 'nucleolated adjective having a nucleolus M19.

■ 'nucleole noun (now rare or obsolete) = NUCLEOLUS M19.

■ ,nucleolo'nema noun, pl. -mas, -mata [-mǝtǝ], Cytology a threadlike aggregation of particles in a nucleolus resembling ribosomes M20.

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