affinity

[ uh-fin-i-tee ]
/ əˈfɪn ɪ ti /

noun, plural af·fin·i·ties.

adjective

of or relating to persons who share the same interests: to arrange charter flights for opera lovers and other affinity groups.

Origin of affinity

1275–1325; Middle English affinite < Middle French < Latin affīnitās connection by marriage. See affine, -ity
Related formsnon·af·fin·i·ty, noun, plural non·af·fin·i·ties, adjective
Can be confusedaffinity infinity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for affinity

British Dictionary definitions for affinity

affinity

/ (əˈfɪnɪtɪ) /

noun plural -ties

Derived Formsaffinitive, adjective

Word Origin for affinity

C14: via Old French from Latin affīnitāt- connected by marriage, from affīnis bordering on, related
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

Word Origin and History for affinity

affinity


n.

c.1300, "relation by marriage" (as opposed to consanguinity), from Old French afinité (12c.), from Latin affinitatem (nominative affinitas) "neighborhood, relationship by marriage," noun of state from affinis "adjacent," also "kin by marriage," literally "bordering on," from ad- "to" (see ad-) + finis "a border, an end" (see finish). Used figuratively since c.1600 of structural relationships in chemistry, philology, etc. Meaning "natural attraction" (as though by family) is from 1610s.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for affinity

affinity

[ ə-fĭnĭ-tē ]

n.

An attraction or force between particles that causes them to combine.
The attraction between an antigen and an antibody.
A relationship or resemblance in structure between species that suggests a common origin.
The selective staining of a tissue by a dye.
The selective uptake of a dye, chemical, or other substance by a tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for affinity

affinity

[ ə-fĭnĭ-tē ]

A relationship or resemblance in structure between species that suggests a common origin.
An attraction or force between particles that causes them to combine, as the attraction between an antigen and an antibody.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.