The word spirometry 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: 18
Highest Scoring Words With Friends™ Play In The Letters spirometry
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Seven Letter Word Alert: (27 words)
imports, imposer, isotype, mistype, moister, mopiest, mortise, permits, porters, presort, primers, primost, promise, pyrites, reports, retrims, rioters, roister, rompers, ropiest, stomper, striper, stripey, toprims, tremors, trimers, trisomy