The word endocrinology 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: 24
Highest Scoring Words With Friends™ Play In The Letters endocrinology
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Seven Letter Word Alert: (46 words)
clinger, cloning, cloying, codling, cologne, condign, condole, condone, condyle, cooling, cording, coreign, corndog, cornily, corning, cringed, croodle, crooned, cryogen, decolor, denying, diynone, dooring, droning, ecology, eroding, gloried, glycine, godlier, grinned, groined, ignored, ionogen, lending, loonier, negroid, nongold, nonoily, oncogen, onliner, orogeny, orology, redoing, relying, rending, yodling