1. a bitter alkaloid obtained from cinchona bark, used medicinally especially as an antimalarial drug
Usage: chemistry; medicine

Examples

• Cinchonine was first isolated from cinchona bark in 1811.
• The pharmaceutical company extracted cinchonine for use in antimalarial treatments.
• Cinchonine and quinine are both alkaloids found in the same plant species.
• Researchers studied the molecular structure of cinchonine in the laboratory.
• The bitter taste of cinchonine made it difficult for patients to take orally.
• Cinchonine proved effective against certain strains of malaria parasites.