Meaning & Definition of Affinity in English

1. (immunology) the attraction between an antigen and an antibody

2. (anthropology) kinship by marriage or adoption

• Not a blood relationship

3. (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"

4. 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"

5. The force attracting atoms to each other and binding them together in a molecule

• "Basic dyes have an affinity for wool and silk"

6. Inherent resemblance between persons or things

7. A natural attraction or feeling of kinship

• "An affinity for politics"

• "The mysterious affinity between them"

• "James's affinity with sam"