The word fluoroscopes 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: 23
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (45 words)
closers, closeup, closure, colours, coolers, corpses, coupler, couples, courses, creosol, cresols, cupless, focuser, focuses, forceps, frescos, fucoses, furless, leprous, ooscope, oospore, ourself, percuss, poofers, poroses, poseurs, precool, process, profess, profuse, pulsers, purfles, recoups, refocus, respool, scooper, scruple, slopers, sources, soursop, spoofer, spooler, sporule, spruces, sucrose