( BrE also sol·em·nise ) / ˈsɒləmnaɪz; NAmE ˈsɑːl-/ verb
[ vn ] ( formal ) to perform a religious ceremony, especially a marriage
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WORD ORIGIN
late Middle English : from Old French solemniser , from medieval Latin solemnizare , from Latin sollemnis customary, celebrated at a fixed date, from sollus entire.