noun (used with a singular verb)
the branch of biology linking the study of genetic inheritance with the study of cell structure, especially for human chromosome analysis for the detection of inheritable diseases.

1930–35; cyto- + genetics

cytogenetic, cytogenetical, adjective
cytogenetically, adverb
cytogeneticist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cytogenetics (ˌsaɪtəʊdʒɪˈnɛtɪks)
(functioning as singular) the branch of genetics that correlates the structure, number, and behaviour of chromosomes with heredity and variation

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

cytogenetics cy·to·ge·net·ics (sī'tō-jə-nět'ĭks)
The branch of biology that deals with heredity and the cellular components, particularly chromosomes, associated with heredity.

cy'to·ge·net'i·cist (-ĭ-sĭst) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cytogenetics   (sī'tō-jə-nět'ĭks)  Pronunciation Key 
The scientific study of the cellular components associated with heredity, especially chromosomes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences for cytogenetics
The preparation and study of karyotypes is part of cytogenetics.
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