(immunology) the attraction between an antigen and an antibody

(anthropology) kinship by marriage or adoption; not a blood relationship

(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

[ Syn: phylogenetic relation ]

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; anthropologys kinship with the humanities

[ Syn: kinship ]

the force attracting atoms to each other and binding them together in a molecule; basic dyes have an affinity for wool and silk

[ Syn: chemical attraction ]

inherent resemblance between persons or things

a natural attraction or feeling of kinship; an affinity for politics; the mysterious affinity between them; James's affinity with Sam'