/ ˈdeɪkɔː(r); NAmE deɪˈkɔːr/ noun
[ U , C , usually sing. ] the style in which the inside of a building is decorated :
interior decor
the restaurant's elegant new decor
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WORD ORIGIN
late 19th cent.: from French décor , from the verb décorer , from Latin decorare embellish, from decus , decor- beauty, honour, or embellishment.