nucleolus
Concise Oxford English Dictionary © 2008 Oxford University Press:
nucleolus /ˌnjuːklɪˈəʊləs/
▶noun (pl. nucleoli /-lʌɪ/) Biology a small dense spherical structure in a cell nucleus during interphase.
– derivatives
nucleolar adjective.
nucleolar adjective.
'nucleolus' also found in these Oxford entries:

