The word californiums 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
Seven Letter Word Alert: (52 words)
airfoil, armfuls, armsful, clamors, clamour, clarion, columns, confirm, cranium, crimson, curials, falcons, finials, florins, foliums, formals, formula, frolics, iconism, incisor, informs, infusor, insofar, insular, liaison, lionism, marconi, marlins, masonic, microns, miscoin, monilia, morulas, moulins, mucosal, musical, nicosia, normals, oculars, oilcans, oscular, rosalic, ruminal, silicon, similar, sirloin, solanum, uncoils, unforms, uniform, unmoral, urinals