Is cacao a word in the Scrabble Dictionary

Yes, cacao is playable

...and is worth 11 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Cacao" Definition

noun

An evergreen tropical American tree (Theobroma cacao) having leathery, ellipsoid, ten-ribbed fruits borne on the trunks and older branches. Also called chocolate tree.
The seed of this plant, used in making chocolate, cocoa, and cocoa butter. Also called cacao bean, cocoa bean.
The dried partly fermented fatty seeds of a South American evergreen tree ( of the family Sterculiaceae) that are used in making cocoa, chocolate, and cocoa butter .
A tree having small yellowish flowers followed by fleshy pods from which cacao is obtained.