Term: prokaryote and prokaryotic (adj)
Origin: Anc Greek προ-/pro(=before, forward) + κάρυον/karyon(=kernel, nut)
Literally meaning: without a well defined nucleus.
Coined: in 1925 by French biologist Eduard Chatton (1883 — 1947) who first used the term in his paper "Pansporella perplex: Reflections on the Biology and Phylogeny of the Protozoa" and later (1937) in his compendium, Titres et Travaux Scientifiques" .
An organism that lacks a cell nucleus , or indeed any other membrane- bound organelles.
Jan Sapp. The Prokaryote-Eukaryote Dichotomy: Meanings and Mythology . Microbiology and Molecular Biology Reviews, June 2005, p. 292-305, Vol. 69, No. 2