The word meitneriums 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: 19
Highest Scoring Words With Friends™ Play In The Letters meitneriums
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Seven Letter Word Alert: (37 words)
ensuite, entries, immense, immerse, immures, interim, itemise, metrise, minimus, minters, mintier, minuets, minuter, minutes, mistier, mistime, mistune, misturn, munites, mustier, neuters, nutsier, reemits, remines, remints, retimes, retunes, reunite, runtime, sternum, tenures, termini, trienes, uniters, unities, unreset, uterine