The word psychrometer 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™ Plays In The Letters
Seven Letter Word Alert: (70 words)
cephems, chomper, chromes, coherer, coheres, compere, compete, cotypes, cyphers, echoers, ecotype, ectypes, emoters, emperor, eophyte, erector, etchers, eyeshot, eyespot, heptose, heteros, mercers, meteors, mothers, pectose, percher, perches, porches, porters, pothers, presort, preterm, rechose, rectors, rectory, rehomes, remorse, remoter, remotes, reperch, reports, reposer, rescope, rescore, reshore, respect, restore, retches, retypes, rhetors, rhymers, rompers, scepter, sceptre, schemer, scyther, shorter, smother, sorcery, specter, spectre, stomper, strophe, tempers, tempore, theorem, thermos, torches, tremors, trochee