nucleoid

[noo-klee-oid, nyoo-] Microbiology.
noun
1.
the central region in a prokaryotic cell, as a bacterium, that contains the chromosomes and that has no surrounding membrane.
adjective
2.
resembling a nucleus.

Origin:
1850–55; nucle(us) + -oid

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American Heritage
Medical Dictionary

nucleoid nu·cle·oid (nōō'klē-oid', nyōō'-)
n.

  1. See nucleus.

  2. See nuclear inclusion body.

adj.
Resembling a nucleolus.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences for nucleoid
Instead, their dna is organized into a structure called the nucleoid.
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