The word reheating is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 14
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (21 words)
arenite, earthen, eighter, granite, grantee, greaten, hairnet, hearing, hearten, heating, ingrate, integer, neither, reagent, rehinge, tangier, tearing, therein, trainee, treeing, triaene