Definition of "coexistent" [co•ex•ist•ent]

• Existing at the same time as something else (adjective)
• That which coexists with another. (noun)

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• "The synthesis of the imagination in apprehension would only present to us each of these perceptions as present in the subject when the other is not present, and contrariwise; but would not show that the objects are coexistent, that is to say, that, if the one exists, the other also exists in the same time, and that this is necessarily so, in order that the perceptions may be capable of following each other reciprocally."
• "That same year, the psychological profession adopted the Bem Sex-Role Inventory, a scale that measured masculinity and femininity as separate and coexistent within an individual."
• "Unrecognized sleep disorders are often a harbinger of coexistent anxiety and depression."