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septiembre m. (Noun) "September"
13th cent. Old Spanish setiembre. From Latin septembrem, accusative of september 'id.' From *septemo membris "of the seventh month," from septem "seven" (see siete) and mensis "month" (see mes).
Indo-European
Romance
Asturian setiembre, Galician setembro, Portuguese setembro, Catalan setembre, French septembre, Aromanian septemvriu, Romanian septembrie