multigenerational

adjective
mul·​ti·​gen·​er·​a·​tion·​al | \ ˌməl-tē-ˌje-nə-ˈrā-shnəl How to pronounce multigenerational (audio) , -ˌtī-, -shə-nᵊl\

Definition of multigenerational

: consisting of, relating to, or involving more than one generation (as of a family) multigenerational households Farm life is unique because of its closeness to the land, the need for family members to work together, the multigenerational involvement, and the sense of family entrepreneurship—positive factors which also can lead to stress.New England Farmer

First Known Use of multigenerational

1961, in the meaning defined above

Keep scrolling for more