The word electrometers 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: 20
Highest Scoring Words With Friends™ Play In The Letters electrometers
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Seven Letter Word Alert: (49 words)
cleomes, clotter, colters, cotters, creoles, electee, elector, emoters, erecter, erector, letters, meeters, melters, mercers, meteors, mettles, mottler, mottles, omelets, reclose, rectors, reelect, reelers, reerect, remeets, remelts, remorse, remoter, remotes, rescore, resmelt, restore, retorts, retrees, roselet, rosette, rotters, secrete, settler, smelter, steerer, teemers, teeters, telecom, teleost, telomer, treelet, tremors, trestle