The word recombinant 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: 22
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (45 words)
aconite, aerobic, ambient, amoebic, ancient, baronet, boatmen, bonnier, botanic, bromate, bromine, bromite, cabinet, cannier, carbine, carmine, catenin, certain, combine, contain, enactor, entrain, erotica, iceboat, incomer, intoner, ironman, marconi, mention, microbe, minaret, montane, moraine, nematic, niobate, nonamer, nonmate, nonmeat, octamer, otarine, raiment, remnant, romaine, romance, tonearm