The word microsporangia 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: 26
Highest Scoring Words With Friends™ Play In The Letters microsporangia
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Seven Letter Word Alert: (83 words)
agarics, agnosia, agnosic, agonism, airgaps, airings, angioma, apogaic, arising, arraign, aspirin, camping, campion, carping, carrion, comings, cooping, copings, copsing, coronas, corpora, corsair, crampon, crimson, iconism, impairs, incisor, isogram, maniacs, marconi, margins, marinas, maroons, marring, masonic, microns, miscoin, mooring, moorpan, moronic, narcoma, nicosia, oarsman, omicron, organic, origami, origins, pairing, paragon, parings, parsing, poising, poromas, pricing, priming, program, prosaic, prosoma, psionic, racoons, raising, rancors, rasping, roaming, roaring, romping, rooming, sangoma, sangria, sarcoma, scaring, scoping, scoring, scorpio, signora, soaping, soaring, soprano, spacing, sparing, spicing, spiring, sporing