The word mesodermal 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: 18
Highest Scoring Words With Friends™ Play In The Letters mesodermal
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Seven Letter Word Alert: (26 words)
areoles, dealers, demerol, desmoma, earldom, earmold, elodeas, emerald, leaders, loaders, modeler, molders, morales, ordeals, radomes, readmes, redeals, reloads, remodel, remolds, resoled, slammed, slammer, smarmed, smeared, smolder