The word polynucleotide 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: 27
Highest Scoring Words With Friends™ Play In The Letters polynucleotide
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Seven Letter Word Alert: (89 words)
clodlet, clouted, codeine, codille, collide, colloid, collude, colonel, condole, conduit, condyle, coopted, copilot, counted, coupled, couplet, cutline, decline, decuple, deepcut, detinue, dicotyl, diluent, ductile, ductily, duopoly, dyeline, ecotype, elocute, eloined, elution, enocyte, enticed, epicyte, epidote, eudicot, euploid, eupneic, include, indolyl, ineptly, inocyte, lection, lenited, leucine, leucite, lucidly, lycopod, needily, neocyte, neotype, nepotic, notedly, noticed, nuclide, nullity, octuple, opulent, outdone, outline, outplod, outpoll, outyell, outyelp, pedicel, pedicle, penlite, pentode, petiole, piloted, pointed, policed, pollute, potency, pounced, poutine, telopod, tepidly, toluene, toluide, toluole, topline, uncited, unclipt, unipole, unoiled, untiled, untyped, ycleped