The word odontologies 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: 17
Highest Scoring Words With Friends™ Play In The Letters odontologies
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Seven Letter Word Alert: (37 words)
delints, dentils, elogist, eloigns, glinted, glisten, godsent, goldens, goodies, gooiest, indoles, isodont, legions, lingoes, lionets, longest, loonies, loosing, looting, lotions, noodles, oleosin, oolites, oolongs, osteoid, singled, singlet, snooted, soloing, sooting, stooged, stooled, stoolie, tingled, tingles, tooling, toonies