Acellular

Definition

adjective

(1) Of or pertaining to a tissue that is not made of cells or not divided into cells, such as hyphae of some fungi.

(2) Noncellular; a living entity without cell(s), as in the Mimivirus, viroids, prions, satellites, plasmids, etc.

(3) Not containing any cells, as in acellular vaccine.

(4) Unicellular; pertains to single-celled organisms, such as protozoans and ciliates.


Supplement

Word origin: prefix meaning "not," from Gk. a-, an- "not," + NL cellulāris, equiv. to cellul(a) live cell (L: little room).
Related phrases: acellular vaccine.

Synonym: noncellular.
Compare: cellular.
See also: cells, tissues.

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