congenital absence of a heart.
Origin of acardia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Congenital absence of the heart, sometimes occurring in the smaller parasitic member of conjoined twins when its partner monopolizes the placental blood supply.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.