cardiac: meaning, definition, pronunciation and examples
C1Formal, Medical, Technical
Quick answer
What does “cardiac” mean?
Relating to the heart.
Audio
Pronunciation
Definition
Meaning and Definition
Relating to the heart.
Anything pertaining to or affecting the heart, or resembling a heart in shape or significance. In informal use, can denote something intense or emotionally affecting.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or use. Spelling and pronunciation are consistent.
Connotations
Identical strong medical/technical connotations in both varieties.
Frequency
Slightly higher frequency in American English due to larger volume of medical media content, but the difference is negligible.
Grammar
How to Use “cardiac” in a Sentence
adjective + noun (cardiac + noun)preposition 'of' (complications of cardiac origin)Vocabulary
Collocations
Examples
Examples of “cardiac” in a Sentence
adjective
British English
- The patient was rushed to the cardiac unit.
- Regular aerobic exercise improves cardiac efficiency.
American English
- He suffered a major cardiac event last night.
- The new drug aims to reduce cardiac risk factors.
Usage
Meaning in Context
Business
Rare, except in insurance or healthcare industry contexts (e.g., 'cardiac health cover').
Academic
Common in medical, biological, and health sciences research papers.
Everyday
Used primarily when discussing health, medical emergencies, or fitness (e.g., 'cardiac exercise').
Technical
The default register in clinical medicine, cardiology, physiology, and medical device documentation.
Vocabulary
Synonyms of “cardiac”
Strong
Neutral
Weak
Vocabulary
Antonyms of “cardiac”
Watch out
Common Mistakes When Using “cardiac”
- Using 'cardiac' as a noun to mean 'heart patient' (incorrect: 'He is a cardiac.' Correct: 'He is a cardiac patient.').
- Misspelling as 'cardic' or 'cardia'.
FAQ
Frequently Asked Questions
Primarily, yes. Its core use is in medical and biological contexts. Informal use (e.g., 'It gave me a cardiac!') is slang for a shock.
'Cardiac' refers specifically to the heart itself. 'Cardiovascular' refers to the entire system: the heart (cardio) and the blood vessels (vascular).
No, it is an adjective. Using it as a noun (e.g., 'He is a cardiac') is incorrect. The correct term is 'cardiac patient' or 'cardiology patient'.
In British English: /ˈkɑː.di.æk/ (KAR-dee-ak). In American English: /ˈkɑːr.di.æk/ (KAR-dee-ak), with a slightly more pronounced 'r' sound.
Relating to the heart.
Cardiac is usually formal, medical, technical in register.
Phrases
Idioms & Phrases
- “cardiac arrest (sudden failure of heart function)”
- “have a cardiac (slang: to be extremely shocked)”
Learning
Memory Aids
Mnemonic
Think: 'CARD'iac - your heart is like the central 'card' in the deck of your body's organs.
Conceptual Metaphor
THE HEART IS THE ENGINE / THE CENTRE. (e.g., 'cardiac output' parallels 'engine output').
Practice
Quiz
In which context is the word 'cardiac' LEAST likely to be used?