noun
omnivorousness; polyphagia
Refers to the quality or state of being omnivorous; used in biological or dietary contexts.
人間の雑食性は、生存に有利だったと考えられている。
Human omnivorousness is thought to have been advantageous for survival.
noun which may take the genitive case particle 'no'
omnivorous
Used attributively with の to describe animals or diets that include both plant and animal matter.
クマは雑食性の動物です。
Bears are omnivorous animals.