The word osteosclerosis 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: 18
Highest Scoring Words With Friends™ Play In The Letters osteosclerosis
:
Seven Letter Word Alert: (73 words)
cerises, closers, closest, closets, coesite, colossi, colters, coolers, coolest, cooties, corsets, cosiest, coterie, creoles, creosol, cresols, cresses, cresset, crosses, elector, erotics, erotise, escorts, estriol, iceless, lessors, loiters, loosest, looters, lossier, ocelots, oecists, oolites, orioles, osselet, ossicle, ostlers, recites, reclose, recoils, relists, resects, resists, reslice, resoils, resoles, retiles, retools, roselet, rosiest, scissor, scooter, secrets, sectors, selects, sessile, sisters, slicers, soirees, soloist, sootier, sorties, stereos, sterile, sterols, stoolie, stories, tieless, toeless, toilers, toolers, tossers, tresses