The word spectrometry 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: 23
Highest Scoring Words With Friends™ Plays In The Letters spectrometry
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Seven Letter Word Alert: (52 words)
compere, compete, cotters, cotypes, ecotype, ectypes, emoters, emperor, erector, eyespot, mercers, meteors, pectose, porters, potters, pottery, presort, preterm, pretest, protect, protest, rectors, rectory, remorse, remoter, remotes, reports, reposer, rescope, rescore, respect, restore, retorts, retypes, rompers, rosette, rotters, scepter, sceptre, sorcery, specter, spectre, spotter, stomper, tempers, tempest, tempore, tempter, treetop, tremors, tryster, typeset