- any chemical agent used chiefly on inanimate objects to destroy or inhibit the growth of harmful organisms.
- serving as a disinfectant.
- an agent that destroys or inhibits the activity of microorganisms that cause disease
1837, from French désinfectant (1816), noun use of present participle of désinfecter (see disinfect). From 1875 as an adjective.
- An agent, such as heat, radiation, or a chemical, that disinfects by destroying, neutralizing, or inhibiting the growth of disease-carrying microorganisms.
- Serving to disinfect.