The word roentgenoscope 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 roentgenoscope
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Seven Letter Word Alert: (67 words)
cenotes, centers, centres, congest, connote, consent, consort, cornets, coronet, encores, entrees, estrone, necrose, negroes, nonpros, nonstop, octenes, oncogen, onestep, ooscope, oospore, openers, openest, operons, orogens, pectens, pectose, penners, pentene, pentose, percent, pontoon, poorest, postern, poteens, precent, prenote, present, preteen, pronest, protege, protons, regents, reneges, rennets, reopens, repents, rescope, respect, scenter, scepter, sceptre, scooper, scooter, scrooge, secrete, serpent, snooper, specter, spectre, sponger, sporont, steepen, steeper, stooper, tenners, terpene