The word histologically 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: 26
Highest Scoring Words With Friends™ Play In The Letters histologically
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Seven Letter Word Alert: (38 words)
agility, alcohol, alights, cahoots, clayish, colitis, coltish, cytosol, galoots, gasohol, ghastly, ghostly, glitchy, glycols, goatish, gotchas, gothics, hastily, illogic, ischial, italics, lightly, loathly, locally, logical, oligist, ooliths, oolitic, saltily, shallot, sightly, solicit, soothly, sootily, stagily, stoical, tallish, tallyho