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multigenerational
multigenerational adj. 
/ˌməlˌtaɪˌdʒɛnəˈreɪʃ(ə)nəl/, /ˌməltəˌdʒɛnəˈreɪʃ(ə)nəl/ composed of or containing members of several generations; relating to several generations (in various senses).
Brit. /ˌmʌltɪdʒɛnəˈreɪʃn̩(ə)l/
, /ˌmʌltɪdʒɛnəˈreɪʃn̩(ə)l/U.S. /ˌməltiˌdʒɛnəˈreɪʃ(ə)nəl/
, /ˌməltiˌdʒɛnəˈreɪʃ(ə)nəl//ˌməlˌtaɪˌdʒɛnəˈreɪʃ(ə)nəl//ˌməltəˌdʒɛnəˈreɪʃ(ə)nəl/ΚΠ
1965 Population Stud. 18 339/1 A household headed by an unmarried mother can become ‘multi-generational’ if a daughter, in turn, becomes an unmarried mother.
1972 P. Laslett Househ. & Family in Past Time 7 A high proportion of multigenerational extended families among the remaining Dutch peasantry in the 1950s.
1987 Wilson Libr. Bull. Mar. 33/3 To make your job as system administrator easier, require that frequent multi-generational backups are made.
1996 United Church Observer Jan. 56/1 The charge involves both urban and rural concerns along with an active multi-generational congregation.
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