familial aggregation


aggregation

 [ag″rĕ-ga´shun] 1. massing or clumping of materials together.2. a clumped mass of material.familial aggregation the occurrence of more cases of a given disorder in close relatives of a person with the disorder than in control families.platelet aggregation platelet agglutination.

fa·mil·i·al ag·gre·ga·tion

occurrence of a trait in more members of a family than can be readily accounted for by chance; presumptive but not cogent evidence of the operation of genetic factors.

fa·mil·i·al ag·gre·ga·tion

(fă-mil'ē-ăl ag'rĕ-gā'shŭn) Occurrence of a trait in more members of a family than can be readily accounted for by chance; presumptive but not cogent evidence of the operation of genetic factors.