adjective. relating to or containing the carbonyl group.
noun. a compound containing metal combined with carbon monoxide.
1. Noun, singular or mass The most common microorganisms to infiltrate and weaken the double bonds of rubber are connected with carbonyl and aldehyde compounds. 2. Adjective Another option available in the United States is carbonyl iron, which contains just a form of iron instead of iron combined with another substance to form an iron salt.