WordNet records no synonym and no antonym for biomedicine. It is the only member of each of its synsets, 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.
the branch of medical science that applies biological and physiological principles to clinical practice
the branch of medical science that studies the ability of organisms to withstand environmental stress (as in space travel)
Synonyms, antonyms and the broader and narrower relations for biomedicine come from Princeton University’s WordNet. Full sources and licences.