Definitions for "Multifactorial"
a trait is considered to be multifactorial in origin when two or more genes, together with an environmental effect, work together to lead to a phenotype. [Source: NHBLI/NCBI Glossary
Having many factors or causes
A phenotype caused by two or more genes.
Referring to the operation of several variables influencing in complex fashion the development or maintenance of a phenomenon.
Having many contributing causes, as in, for example, the context of disease risks.
Refers to a disorder or condition that has a number of different causes.