1686, from L., from Gk., "outer covering" (of a fruit, flower bud, etc.), from root of kalyptein "to cover, conceal" (see cell). The proper plural is calyces.
Main Entry: ca·lyx Variant: alsoca·lix/'kA-liks also 'kal-iks/ Function: noun Inflected Form: pluralca·lyx·esorca·ly·ces/'kA-l&-"sEz also 'kal-&-/alsoca·li·ces : a cuplikedivision of the renal pelvis surrounding one or more renal papillae