The word cytophotometric 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: 31
Highest Scoring Words With Friends™ Play In The Letters cytophotometric
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Seven Letter Word Alert: (34 words)
chicory, choicer, chomper, chromic, cometic, comport, compote, crochet, cryptic, ectopic, moocher, morphic, mycotic, omitter, oocytic, oophore, oophyte, ototome, pitcher, porotic, portico, potiche, pottery, promote, prootic, protect, repitch, rototom, thermic, thorite, thymier, timothy, tiptoer, trophic