The word chemoreceptive 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: 32
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (41 words)
ceviche, cheerio, chimere, choicer, chomper, chromic, cometic, compere, compete, coterie, coveter, crevice, crochet, ectopic, emotive, emptier, epitome, etheric, evictee, evictor, heretic, improve, morphic, overtip, pitcher, pivoter, potiche, preemie, premeet, receipt, receive, rechime, repitch, repivot, revoice, tempore, theorem, thermic, trochee, trophic, vomiter