Existing or present in reality; actually being or occurring (archaic or literary form of 'existent').
From Latin existens, present participle of existere (to exist, to stand forth). This is an older spelling or variant form of existent, more common in historical philosophical texts.
Medieval and Renaissance philosophers loved the word existant because it sounded more Latin and philosophical than plain 'existing'—language was a way to sound learned and authoritative!
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