issuant adjective3 •Issuing or emerging from something, especially from the bottom (or a division) of the field or chief, or from an ordinary. •Having only the upper half depicted, especially if because it is issuing from something (such as a division of the field). (Compare naissant.)The lion is issuant from a heraldic crown of gold on which are arranged the rose (for England), the thistle (for Scotland), the leek (for Wales), and the oak-leaf (for Great Britisn as a whole). — 1956 •(no longer used) Issuing, emerging.