The word glyceraldehyde 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: 29
Highest Scoring Words With Friends™ Plays In The Letters glyceraldehyde
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Seven Letter Word Alert: (42 words)
acrylyl, adhered, alleged, alleger, allergy, charged, cheddar, cheered, cheerly, cleared, clearly, cradled, deadeye, decayed, decayer, declare, decreed, degrade, delayed, delayer, dyarchy, dyeyard, eagerly, elderly, gallery, gladder, healded, healder, lagered, largely, layered, leached, leacher, lechery, leeched, leecher, reached, receded, redhead, regally, relaced, relayed