The word oxyacetylenes 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: 29
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (41 words)
acetone, acetyls, acolyte, acyloxy, alecost, axstone, calyxes, cantles, cenotes, cleanse, cotylae, cotyles, cyanose, enclose, enocyte, enolase, enolate, enstyle, exactly, eyelets, lactone, lactose, lancets, lateens, latency, leanest, leantos, locates, neocyte, octanes, octenes, octynes, oleates, oxysalt, scalene, scantly, synoecy, syntaxy, telexes, tensely, xylenes