The word eudiometers 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: 16
Highest Scoring Words With Friends™ Plays In The Letters eudiometers
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Seven Letter Word Alert: (56 words)
demerit, demotes, detours, diester, dieters, dimeter, dustier, editors, eeriest, emersed, emoters, erotise, erudite, ioduret, isomere, meeters, merited, meteors, metered, metrise, misdoer, mitered, moister, mortise, mousier, muroids, mustier, outride, outside, redeems, reedits, reemits, reested, remeets, remotes, residue, resumed, retimed, retimes, roisted, rudites, ruesome, seedier, sortied, steered, steroid, storied, stormed, stourie, studier, tedious, tediums, teemers, tierods, tourism, tridems