11 letters · 17 points in Scrabble
noun a collection of things that have been combined; an assemblage of separate parts or qualities
noun a coordinated sequence of chess moves
noun a sequence of numbers or letters that opens a combination lock
originPIE word *dwóh₁ From Middle English combinacioun, combynacyoun, from Old French combination, from Late Latin combīnātiō. Morphologically combine + -ation.
Etymology from Wiktionary, CC BY-SA 3.0