a single-celled organism lacking a true nucleus
Origin of prokaryotefrom Classical Greek pro-, before + kary?tis: see eukaryote
Any of various microorganisms of the domains Archaea and Bacteria, characterized by the absence of a distinct membrane-bound nucleus and membrane-bound organelles and by the simultaneous occurrence of DNA transcription and protein synthesis at the same site, in contrast to eukaryotes. Also called moneran .
Origin of prokaryoteFrench procaryote Greek pro- before ; see pro- 2. Greek karuōtos having nuts ( from karuon nut ; see karyo- . )
From pro- + Ancient Greek ÎºÎ¬ÏÏ…Î¿Î½ (karuon, “nut, kernel") + -ote.