The word pyrochemistry 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: 28
Highest Scoring Words With Friends™ Play In The Letters pyrochemistry
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Seven Letter Word Alert: (98 words)
chemist, chipset, chirper, chomper, chromes, chymist, ciphers, cithers, coheirs, copiers, copyist, cotypes, crimper, crisper, crosier, cyphers, erotics, hermits, heroics, heroism, history, homiest, horsier, hosiery, hospice, imports, imposer, isohyet, isotype, isotypy, metrics, miscopy, mistype, moister, mopiest, morphic, mortise, mothers, myocyte, myotics, mystery, ostrich, permits, pitcher, pitches, poetics, porches, porters, pothers, potiche, presort, pricers, primers, primost, promise, pyocyst, pyocyte, pyrites, rectors, rectory, repitch, reports, retrims, rhetors, rhotics, rhymers, rhymist, richest, rioters, roister, rompers, ropiest, rosehip, scrimpy, scyther, shorter, shrimpy, smother, society, sorcery, spermic, spheric, spicery, stomper, striper, stripey, strophe, thermic, thermos, thymier, toprims, torches, tremors, triceps, trimers, trisomy, trophic, tropics