Rēn'i-fōrm, a.

adjective

(Synop., § 130), a. [Fr. réniforme, from Lat. renes, the kidneys, and forma, form.]

Sense 1. Having the form or shape of a kidney; as, a reniform mineral. Dana.

Sense 2. (Bot.) Having the form of a section of a kidney; broader than long, and more or less rounded, with the lower margin concave.

A drawing of a kidney-shaped leaf with a long, curved stem.
Reniform Leaf.