The word cytogeneticists 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 cytogeneticists
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Seven Letter Word Alert: (72 words)
cenotes, cession, ciscoes, coesite, cogency, cognise, conceit, concise, congest, consist, contest, cosiest, cosigns, cosines, costing, coyness, cygnets, cystine, cytosis, egoists, egotist, encysts, enocyte, entices, eosinic, genesis, genetic, gneissy, gnostic, iciness, iconist, ignites, incests, incises, incites, ingests, inocyte, inosite, insects, ionises, neocyte, nosiest, notices, notists, octenes, octynes, oecists, science, sconces, section, seitens, sestine, setting, siccing, signees, signets, sitting, society, stenose, stetson, stogeys, stogies, syenite, tensest, testing, tictocs, tiniest, tocsins, tonette, tossing, yessing, yoginis