centriole
[sen´tre-ōl]either of the two cylindrical organelles located in the centrosome and containing nine triplets of microtubules arrayed around their edges; centrioles migrate to opposite poles of the cell during cell division and serve to organize the spindles. They are capable of independent replication and of migrating to form basal bodies.
ring centriole a common misnomer for the anulus of the spermatozoon, which is not actually a centriole.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
cen·tri·ole
(sen'trē-ōl),Tubular structures, 150 nm by 300-500 nm, with a wall having nine triple microtubules, usually seen as paired organelles lying in the cytocentrum; centrioles may be multiple and numerous in some cells, such as the giant cells of bone marrow.
[G. kentron, a point, center]
Farlex Partner Medical Dictionary © Farlex 2012
centriole
(sĕn′trē-ōl′)n.
One of two cylindrical cellular structures that are composed of nine triplet microtubules and form the asters during mitosis.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
cen·tri·ole
(sen'trē-ōl)Tubular structures usually seen as paired organelles lying in the cytocentrum; centrioles may be multiple and numerous in some cells, such as the giant cells of bone marrow.
[G. kentron, a point, center]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
centriole
A short, hollow, cylindrical ORGANELLE consisting of nine sets of microtubules and usually occurring in pairs set at right angles to each other. Centrioles are responsible for the production of the spindle apparatus that appears just before the separation of the chromosomes into two sets prior to cell division.centriole
One of the two rod-like bodies in cells forming the poles of the spindles during cell division.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
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Fig. 97 Centriole . Structure and orientation.
centriole
one of a pair of small ORGANELLES lying at right angles to each other in an area known as the CENTROSOME, just outside the nucleus of lower plants and all animals (see Fig. 97 ). Centrioles are self-replicating, dividing into two during the ‘S’ phase of the INTERPHASE of the CELL CYCLE and then separating into two pairs, one pair migrating to each pole of the future mitotic spindle, from which an ASTER forms. The role of centrioles in nuclear division is unclear, since they are absent from most plant cells and laser-beam irradiation of centrioles has no effect on division.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005