The word liquefaction 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: 30
Highest Scoring Words With Friends™ Play In The Letters liquefaction
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Seven Letter Word Alert: (35 words)
aconite, aliquot, aloetic, antique, auction, cauline, caution, ciliate, coalite, coequal, confute, cutleaf, cutline, elation, elution, faction, fiction, filiate, flounce, foliate, inflate, inflect, inflict, inquiet, lactone, lection, lunatic, outface, outline, quantic, quintic, tailfin, tequila, tinfoil, toenail