The word vulcanisation 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: 24
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (58 words)
actions, actuals, alicant, anionic, annuals, anoints, antlion, atonias, atonics, auction, aviatic, avionic, cannoli, cannula, cantons, canulas, cations, caution, coastal, colitis, consult, contain, iconist, incants, insulin, inulins, italics, lacinia, liaison, lunatic, nations, nautica, niacins, nicosia, nonsuit, oculist, oilcans, outsail, satanic, silicon, solicit, stannic, stoical, suction, sultana, toucans, uncivil, unclots, uncoils, unction, unstain, unstoic, valiant, vicious, victual, violins, violist, voltaic