The word acanthocytes 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: 23
Highest Scoring Words With Friends™ Play In The Letters acanthocytes
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Seven Letter Word Alert: (29 words)
accents, actants, attache, cachets, catches, chances, chantey, chasten, coaches, conches, contact, contest, costate, cyanate, cyanose, etchant, hastate, honesty, hyaenas, notches, octanes, octants, octynes, saccate, snatchy, stenchy, tachyon, testacy, toccata