# acardiac

CEFR C2 · Adjective

Source: https://englishreference.com/word/acardiac
Updated: 2026-05-26

## Definition

relating to the heart or having no heart. It describes a condition where a heart does not develop or is missing.

For teachers: relating to the heart or lacking a heart. Often used in medical contexts to describe congenital heart defects or the absence of a functional cardiac structure.

## Examples

- The acardiac twin is a rare medical condition.
- In some cases of acardiac twinning, one fetus develops without a heart while the other relies on the shared circulatory system.
- The study of acardiac development provides critical insights into the early stages of embryonic vascularization and the genetic factors that govern cardiac formation.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.