The word actinometric 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 actinometric
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Seven Letter Word Alert: (61 words)
aconite, actinic, airtime, carmine, catmint, cattier, centric, ceramic, certain, citator, citrate, citrine, cittern, cocaine, cometic, conceit, concert, contact, cornett, cornice, enactor, erotica, icteric, imitate, inciter, incomer, inertia, interim, marconi, martini, meconic, meiotic, minaret, miniate, mintier, mitotic, moraine, nattier, nematic, nictate, nitrate, nitrite, nittier, oceanic, octamer, omitter, otarine, racemic, raiment, ricotta, romaine, romance, tantric, termini, tetanic, tintier, titanic, titmice, tonearm, torment, tritoma