The word polyelectrolyte 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: 28
Highest Scoring Words With Friends™ Play In The Letters polyelectrolyte
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Seven Letter Word Alert: (21 words)
clotter, ecotype, elector, erectly, lottery, lyocell, plotter, portlet, pottery, precool, prelect, protect, pyocyte, reelect, replete, rootlet, tootler, treelet, treetop, trolley, trollop