Definition of Eukaryote 1. An organism with cells characteristic of all life forms except primitive microorganisms such as bacteria; i.e. an organism with good' or membrane-bound nuclei in its cells Noun Synonyms for word "eukaryote" Semanticaly linked words with "eukaryote" Hyponims for word "eukaryote" Lexical Analysis for "eukaryote" eukaryotic having cells with good' or membrane-bound nuclei prokaryote a unicellular organism having cells lacking membrane-bound nuclei; bacteria are the prime example but also included are blue-green algae and actinomycetes and mycoplasma etymology eukaryotic etymology picoeukaryote etymological origin of eu- variant:orthography eucaryote etymologically related eukaryon etymologically related eukaryotic etymologically related prokaryote is derived from eukarya is derived from eukaryotes