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 forms

non·af·fin·i·ty, noun, plural non·af·fin·i·ties, adjective

Can be confused

affinity 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 Forms

affinitive, 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

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.