The word bioluminescence 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: 31
Highest Scoring Words With Friends™ Play In The Letters bioluminescence
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Seven Letter Word Alert: (80 words)
becomes, beeline, beslime, binocle, bounces, buccins, bucines, bucolic, bulimic, bunions, bunnies, celcius, cleomes, clinics, colicin, columns, combine, concise, consume, coulees, council, counsel, cubicle, cuisine, cumenes, ebonics, ebonies, elision, elusion, embolic, embolus, emulsic, emulsin, enclose, enemies, ennoble, eosinic, icecube, icicles, iconism, incense, incline, incomes, incubee, inlines, inosine, insulin, inulins, leucine, leucism, licence, license, linemen, lionise, lionism, meconic, menisci, minibus, minions, miocene, miscoin, mobiles, moulins, muscone, niobium, nominee, nucleic, nucleon, obscene, occluse, omnibus, science, silence, silicon, sublime, umbones, unbones, unclose, uncoils, unilobe