The word metallurgical 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: 25
Highest Scoring Words With Friends™ Play In The Letters metallurgical
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Seven Letter Word Alert: (52 words)
aircell, allelic, alltime, amateur, arcuate, article, auricle, calumet, caramel, cartage, claimer, climate, cureall, curtail, gallate, gallium, gametic, glacial, glacier, gluteal, gracile, grimace, illegal, lacteal, lamella, lateral, literal, macular, magical, mailcar, maltier, margate, marital, marlite, martial, metical, micella, migrate, miracle, mullite, muriate, ragtime, recital, reclaim, regalia, tallier, tillage, tramell, tumeric, uraemia, uraemic, uralite