constriction(redirected from constrictively)
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Genetics a localized narrow region of a chromosome, esp at the centromere
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
(science and technology)
Narrowing of a channel or cylindrical member.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.