WordNet records no synonym and no antonym for hypertrophic cardiomyopathy. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a disorder in which the heart muscle is so strong that it does not relax enough to fill with the heart with blood and so has reduced pumping ability
Synonyms, antonyms and the broader and narrower relations for hypertrophic cardiomyopathy come from Princeton University’s WordNet. Full sources and licences.