Sorry, no definitions found. Check out and contribute to the discussion of this word!


Sorry, no etymologies found.


Help support Wordnik (and make this page ad-free) by adopting the word acardiac twin.


    Sorry, no example sentences found.


Log in or sign up to get involved in the conversation. It's quick and easy.

  • The acardiac twin is a parasitic twin that fails to develop a head, arms and a heart. The parasitic twin, little more than a torso with or without legs, receives its blood supply from the host twin by means of an umbilical cord-like structure, much like a fetus in fetu, except the acardiac twin is outside the host twin's body. Although the reason is not fully understood, it is apparent that deoxygenated blood from the pump twin is perfused to the acardiac twin. The acardiac twin grows along with the pump twin, but due to inadequate perfusion it is unable to develop the structures necessary for life, and presents with dramatic deformities. (Wikipedia)

    January 8, 2012