The nephroid is a plane curve whose name means kidney-shaped (compare nephrology.) Although the term nephroid was used to describe other curves, it was applied to the curve in this article by Proctor in 1878. This and the information below may be verified in Lockwood, pp. 62–71 (see References). == Equations for the Nephroid == === Parametric eq...
kidney-shaped
String model of a nephroid by Adrian Rossiter A type of curve often see on the surface of a cup of coffee in the sunshine – a crescent of light formed by sunlight reflecting off the inside of the cup onto the surface of the drink. More generally, it is the shape made by parallel rays of...
Kidney-shaped; resembling a kidney. ... Synonym: reniform. ... Origin: nephro-+ G. Eidos, resemblance ... (05 Mar 2000) ... 
(nef´roid) resembling a kidney.
Kidney-shaped; reniform.
Type: Term Pronunciation: nef′royd Definitions: 1. Kidney-shaped; resembling a kidney. Synonyms: reniform