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semana (1) f. (Noun) "week"
12th cent. Old Spanish setmana. From Latin septimana "week" (but more literally "of the seventh"), from septimus "seventh" (see séptimo) and the adjective-forming suffix -anus (see -ano).
Indo-European
Romance
Asturian sermana, Portuguese semana, Galician semana, Catalan setmana, French semaine, Italian settimana, Aromanian siptãmãnã, Romanian săptămână