名詞 nucleolus:

1. a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
   同義詞：nucleole

nu.cle.o.lus

n.（名詞）
【復數(shù)】 nu.cle.o.li[-lo.] 【生物學】
A small, typically round, granular body composed of protein and RNA in the nucleus of a cell, usually associated with a specific chromosomal site and involved in ribosomal RNA synthesis and the formation of ribosomes.
核仁：小而常為圓形的顆粒體，由蛋白質(zhì)和細胞核中的核糖核酸構(gòu)成，通常與一特定染色體締合有直接關(guān)系并涉及核糖體核糖核酸的合成和核糖體的形成

來源：
Latin [diminutive of] nucleus [kernel] * see nucleus
拉丁語 [] nucleus的小后綴 [核，仁] *參見 nucleus

【引伸】
nucle.olar