The word cytogenesis 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: 19
Highest Scoring Words With Friends™ Play In The Letters cytogenesis
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Seven Letter Word Alert: (45 words)
cenotes, cession, coesite, cognise, congest, consist, cosiest, cosigns, cosines, costing, coyness, cygnets, cystine, cytosis, egoists, encysts, enocyte, entices, genesis, genetic, gneissy, gnostic, incests, ingests, inocyte, insects, neocyte, nosiest, notices, octenes, octynes, oecists, section, seitens, sestine, signees, signets, society, stenose, stogeys, stogies, syenite, tocsins, tossing, yessing