9 letters · 11 points in Scrabble
noun a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
originEtymology tree Proto-Italic *knuks Latin nux Latin nucleuslbor. English nucle(us) Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Latin -ulus Latin -olus English nucleolus From nucle(us) + Latin -olus.
Etymology from Wiktionary, CC BY-SA 3.0