UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌpætrɪˈlɪnɪəl/US:USA pronunciation: respellingUSA pronunciation: respelling(pa′trə linē əl, pā′-)

WordReference Random House Unabridged Dictionary of American English © 2020
pat•ri•lin•e•al  (pa′trə linē əl, pā′-),USA pronunciation adj. 
  1. inheriting or determining descent through the male line. Cf.  matrilineal. 
pat′ri•line•al•ly, adv. 
  • patri- + lineal 1900–05

Collins Concise English Dictionary © HarperCollins Publishers::
patrilineal /ˌpætrɪˈlɪnɪəl/, patrilinear adj
  1. tracing descent, kinship, or title through the male line
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