The word siderocytes 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: 17
Highest Scoring Words With Friends™ Play In The Letters siderocytes
:
Seven Letter Word Alert: (57 words)
cerises, ceroids, cestode, coedits, coesite, corsets, cosiest, coterie, credits, cresset, crested, crossed, cystoid, cytosis, deceits, decoyer, decries, deicers, deserts, desires, dessert, destroy, diester, dieters, diocese, directs, dissect, dossier, editors, erotics, erotise, escorts, oecists, oysters, recited, recites, recodes, reedits, resects, resides, roisted, rosiest, screeds, secrets, sectors, society, soirees, sortied, sorties, stereos, steroid, storeys, storied, stories, strides, tierods, tressed