-pēəm noun
( plural ephip·pia -pēə)
Etymology: New Latin, from Greek ephippion saddlecloth, saddle, from neuter of ephippios for putting on a horse, from epi- + hippios of a horse, from hippos horse
1. : sella turcica
2. : a saddlelike chitinous thickening over the brood pouch of various cladocerans that when shed forms a bivalve capsule containing the winter eggs