Affinity

[n] inherent resemblance between persons or things
[n] a natural attraction or feeling of kinship; "an affinity for politics"; "the mysterious affinity between them"; "James's affinity with Sam"
[n] the force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"
[n] (immunology) the attraction between an antigen and an antibody
[n] a close connection marked by community of interests or similarity in nature or character; "found a natural affinity with the immigrants"; "felt a deep kinship with the other students"; "anthropology's kinship with the humanities"
[n] (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts; "in anatomical structure prehistoric man shows close affinity with modern humans"
[n] kinship by marriage or adoption; not a blood relationship

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Synonyms

chemical attraction, kinship, kinship by marriage, phylogenetic relation

Antonyms

blood kinship, cognation, consanguinity

Related Terms

a thing for, accord, accordance, addition, adduction, adjunct, affairs, affiliation, agape, agreement, alikeness, alliance, allurement, amity, analogy, approximation, aptitude, aptness, assemblage, assent, association, attractance, attraction, attractiven