The word thermoreceptor 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: 25
Highest Scoring Words With Friends™ Play In The Letters thermoreceptor
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Seven Letter Word Alert: (29 words)
cheerer, chomper, coherer, compere, compete, comport, compote, creeper, emperor, erecter, erector, moocher, percher, premeet, preterm, proctor, promote, protect, reerect, remoter, reperch, teether, tempore, tempter, theorem, thereto, treetop, trochee, trooper