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[sahy-tol-uh-jee] /saɪˈtɒl ə dʒi/
the study of the microscopic appearance of cells, especially for the diagnosis of abnormalities and malignancies.
Origin of cytology
1885-90; cyto- + -logy
Related forms
[sahyt-l-oj-ik] /ˌsaɪt lˈɒdʒ ɪk/ (Show IPA),
cytological, adjective
cytologically, adverb
cytologist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for cytology
Historical Examples
  • cytology (cell word), the study of the cell, the constituent unit of organisms.

    Applied Eugenics Paul Popenoe and Roswell Hill Johnson
  • In discussing these species the reader may be referred to Professor Harper's study of cytology, Bot.

    The North American Slime-Moulds Thomas H. (Thomas Huston) MacBride
  • By genetic experiment, cytology and physiological chemistry aiding, we may hope to acquire such knowledge.

  • The cytology of the fat body of the common roach, Blatella germanica, with emphasis on intracytoplasmic inclusion bodies.

  • And yet, in spite of this fact, there are few fields of scientific work possessing more general interest than that of cytology.

  • Lamarck died before the rise of the sciences of morphology, embryology, and cytology.

    Lamarck, the Founder of Evolution Alpheus Spring Packard
  • My aim is to describe the present position of our knowledge of cytology.

    Darwin and Modern Science A.C. Seward and Others
British Dictionary definitions for cytology


the study of plant and animal cells, including their structure, function, and formation
the detailed structure of a tissue, as revealed by microscopic examination
Derived Forms
cytological (ˌsaɪtəˈlɒdʒɪkəl) adjective
cytologically, adverb
cytologist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for cytology

1857, from cyto- + -logy. Related: Cytologist (1884).

Online Etymology Dictionary, © 2010 Douglas Harper
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cytology in Medicine

cytology cy·tol·o·gy (sī-tŏl'ə-jē)
The branch of biology that deals with the formation, structure, and function of cells.

cy'to·log'ic (-tə-lŏj'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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cytology in Science
The scientific study of the formation, structure, and function of cells.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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