The word myelinization 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: 30
Highest Scoring Words With Friends™ Play In The Letters myelinization
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Seven Letter Word Alert: (34 words)
ailment, aliment, alimony, amenity, aniline, antlion, antonym, anytime, atomize, azymite, elation, inanely, initial, laytime, lineman, lionize, meatily, melanin, mention, militia, miniate, monilia, montane, netmail, nominal, nonlate, nonlazy, nonmail, nonmale, nonmate, nonmeal, nonmeat, tinnily, toenail