Hypercyesia ... Synonym: superfetation. ... Origin: hyper-+ G. Kyesis, pregnancy ... (05 Mar 2000) ... 
Type: Term Pronunciation: hī′pĕr-sī-ē′sis, -ē′zē-ă Synonyms: superfetation
hypercyesis, hypercyesia 1. Superfetation or the formation of a fetus as the result of an impregnation occurring after another impregnation but before the birth of the offspring produced by it. 2. The fertilization and subsequent development of an ovum when a fetus is already present in the uterus, as a result of fertilization of ova during differ...