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[hoh-muh-sek-shoo-al-i-tee, or, esp. British, -seks-yoo-] /ˌhoʊ məˌsɛk ʃuˈæl ɪ ti, or, esp. British, -ˌsɛks yu-/
sexual desire or behavior directed toward a person or persons of one's own sex.
Origin of homosexuality
First recorded in 1890-95; homo- + sexuality
Related forms
antihomosexuality, noun, adjective
Usage note
See homosexual. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for homosexuality


/ˌhəʊməʊˌsɛksjʊˈælɪtɪ; ˌhɒm-/
sexual attraction to or sexual relations with members of the same sex Compare heterosexuality
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 homosexuality

1892; see homosexual + -ity.

Online Etymology Dictionary, © 2010 Douglas Harper
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homosexuality in Medicine

homosexuality ho·mo·sex·u·al·i·ty (hō'mə-sěk'shōō-āl'ĭ-tē, -mō-)

  1. Sexual orientation to persons of the same sex.

  2. Sexual activity with another of the same sex.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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homosexuality in Culture

homosexuality definition

A sexual attraction between persons of the same sex. (See gay and lesbian; compare heterosexuality.)

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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