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Dictionary definition for: Affinity

1. (n) the force attracting atoms to each other and binding them together in a molecule; "basic dyes have an affinity for wool and silk"

2. (n) (immunology) the attraction between an antigen and an antibody

3. (n) kinship by marriage or adoption; not a blood relationship

4. (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"

5. (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"

6. (n) inherent resemblance between persons or things

7. (n) a natural attraction or feeling of kinship; "an affinity for politics" "the mysterious affinity between them" "James''s affinity with Sam"

WordNet 2.1 Copyright Princeton University. All rights reserved.