Emily Dickinson Lexicon

CORD'ATE, or CORD'A-TED, a. [L. cordatus, with a different signification, from cor, the heart.]

Having the form of a heart; heart-shaped; a term used by naturalists; as, a cordate leaf in botany, resembling the longitudinal section of the heart. Hence, cordate-oblong, heartshaped lengthened; cordate-lanceolate, heart-shaped, gradually tapering toward each extremity, like the head of a lance; cordate-sagittate, heart-shaped, but resembling the head of an arrow. – Martyn.