The word disseminates 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
Seven Letter Word Alert: (73 words)
animist, aniseed, assents, daisies, deities, demasts, demates, demeans, dements, demises, demists, densest, desists, desmans, destain, destine, detains, diamine, dieties, dietine, dimness, disease, dismiss, dissent, easiest, indites, inmates, inseams, insides, insists, instead, itemise, madness, maidens, matinee, meanest, meanies, medians, mediate, mindset, miniate, misdate, misedit, missaid, misseat, nemesis, sadisms, sadists, sadness, sainted, sateens, seaside, sedates, seitans, seitens, senates, sensate, sesames, sestina, sestine, siamese, sideman, siemens, siestas, simians, snidest, stained, stamens, standee, steamed, stimied, stimies, tandems