The word dissemination 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: 19
Highest Scoring Words With Friends™ Play In The Letters dissemination
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Seven Letter Word Alert: (94 words)
adonise, amidone, amnions, animist, animose, anodise, anoints, asinine, atomise, daemons, daisies, demasts, demists, dentins, desmans, destain, detains, diamine, diatoms, diimine, dimness, diosmin, dissent, domains, donates, edition, endmost, imidine, indents, indians, indites, inmates, inosine, inosite, inseams, insides, instead, intends, intoned, intones, iodines, iodises, iodisms, iodites, ionised, ionises, madness, maidens, mansion, mastoid, medians, meiosis, mention, mindset, miniate, minions, misdate, misdoes, misdone, misedit, missaid, misseat, mission, mitoses, mitosis, moisten, montane, nations, nondate, nondiet, nonmate, nonmeat, noseans, nosiest, sainted, sandmen, seamost, seitans, sestina, sideman, siennas, simians, sinoids, snidest, somites, sonnets, stained, stamens, stimied, stimies, stomies, tandems, tendons, tension