The word sarcolemmas 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: 21
Highest Scoring Words With Friends™ Plays In The Letters sarcolemmas
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Seven Letter Word Alert: (32 words)
areolas, armless, caeomas, cameras, caramel, carless, clammer, clamors, closers, coalers, cresols, escolar, lassoer, macrame, morales, morsels, oarless, oracles, rascals, reclass, recoals, rosacea, sacrals, sarcasm, sarcoma, scalars, scalers, scleras, screams, slammer, solacer, solaces