What does prokaryotic mean?
“Prokaryotic” is an adjective describing organisms, cells, or biological systems whose cells lack a membrane-bound nucleus. The term applies especially to bacteria and archaea, the two major groups of prokaryotes, and is also used for their DNA, genes, genomes, and cellular processes. Its central contrast is with “eukaryotic,” which refers to organisms whose DNA is enclosed in a membrane-bound nucleus. In scientific writing, “prokaryotic” signals a particular form of cellular organization rather than simply something small or primitive. The word is useful because it distinguishes a fundamental structural feature of life and provides a concise way to compare bacterial and archaeal biology with the organization of plant, animal, fungal, and protist cells. Although specialized in ordinary use, it is widely understood in academic and educational contexts.
adjectiveRelating to or characteristic of prokaryotes, especially bacteria and archaea. Prokaryotic cells lack a membrane-bound nucleus and generally have simpler internal organization than eukaryotic cells.
- Relating to or characteristic of prokaryotes, especially bacteria and archaea.
"Bacteria are prokaryotic organisms whose genetic material is located in a nucleoid rather than a membrane-bound nucleus."
"Bacteria and archaea are prokaryotic organisms with cells that lack a membrane-bound nucleus."
"The researchers compared gene expression in a prokaryotic cell with gene expression in a eukaryotic cell."
A prokaryotic cell keeps its DNA in a nucleoid instead of a nucleus—a bacterial blueprint with no membrane-bound home.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of prokaryotic
The word belongs to the vocabulary of modern biology and is built from Greek roots: pro- meaning “before” and karyon meaning “kernel” or “nucleus.” The related noun “prokaryote” was formed to refer to an organism with a nucleus-like genetic region that is not enclosed by a membrane. The adjective “prokaryotic” was then developed from that noun, with the suffix -otic expressing a relation or connection, while procaryote reflects an alternative spelling of the same term.
Related word forms
How prokaryotic is actually used
This is primarily a formal scientific and educational term used in biology, microbiology, genetics, and related fields. It commonly modifies terms such as cell, organism, genome, gene, and expression. The spelling is not regionally restricted.
Easily confused with prokaryotic
“Prokaryote” is a noun for an organism whose cell lacks a membrane-bound nucleus, whereas “prokaryotic” is the adjective describing such an organism or its cells or components.
“Prokaryotic” describes cells without a membrane-bound nucleus, while “eukaryotic” describes cells whose DNA is enclosed within a membrane-bound nucleus.