Definitions for "Reniform"
Having the form or shape of a kidney; as, a reniform mineral; a reniform leaf.
a. (L. ren, kidney; forma, shape) having the form or shape of a kidney.
Aggregate describing smooth, rounded, kidney-like agglomerations. Rounded agglomerations of reniform aggregates are larger than botryoidal agglomerations but smaller than mammilary agglomerations.