Definition of affinity
1 : relationship by marriage
2a : sympathy marked by community of interest : kinship She has an affinity to him because of their common musical interests.b (1) : an attraction to or liking for something people with an affinity to darkness — Mark Twain pork and fennel have a natural affinity for each other — Abby Mandel (2) : an attractive force between substances or particles that causes them to enter into and remain in chemical combinationc : a person especially of the opposite sex having a particular attraction for one
3a : likeness based on relationship or causal connection found an affinity between the teller of a tale and the craftsman — Mary McCarthy this investigation, with affinities to a case history, a psychoanalysis, a detective story — Oliver Sacksb : a relation between biological groups involving resemblance in structural plan and indicating a common origin
Examples of affinity in a sentence
Jefferson's personal debts continued to mount … . His addiction to French wine, like his affinity for French ideas, never came to grips with the more mundane realities. —Joseph J. Ellis, American Heritage, May/June 1993
… neither virus has an affinity for T cells. —Robert C. Gallo, Scientific American, 1987
Animals sharing this basic architecture may have no closer affinity than a beetle and a squid. —Stephen Jay Gould, Natural History, 1985
There's always been an affinity between us.
He never felt any affinity with the other kids in his neighborhood.
Origin and Etymology of affinity
Middle English affinite, from Anglo-French or Latin; Anglo-French affinité, from Latin affinitas, from affinis bordering on, related by marriage, from ad- + finis end, border
First Known Use: 14th century
Synonym Discussion of affinity
AFFINITY Defined for English Language Learners
Definition of affinity for English Language Learners
: a feeling of closeness and understanding that someone has for another person because of their similar qualities, ideas, or interests
: a liking for or an attraction to something
: a quality that makes people or things suited to each other
AFFINITY Defined for Kids
Definition of affinity for Students
: a strong liking for or attraction to someone or something They had much in common and felt a close affinity.
Medical Definition of affinity
1: an attractive force between substances or particles that causes them to enter into and remain in chemical combination
2: a relation between biological groups involving resemblance in structural plan and indicating a common origin
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