What is the best definition of "disinfectant" in healthcare?

Disinfectants are crucial in healthcare settings as they serve a specific role in infection control. The definition that identifies a disinfectant as a chemical that kills viruses and bacteria accurately describes its primary purpose. Disinfectants are formulated to eliminate pathogens that can cause infections, making environments safer for patients and healthcare workers.

These chemicals are used on surfaces and equipment that come into contact with patients to minimize the risk of spreading infections. Their effectiveness typically involves a certain concentration of active ingredients that can denature proteins, disrupt cell membranes, or otherwise interfere with the life processes of microorganisms, thereby ensuring they are effectively eliminated.

The other definitions do not align with the healthcare context of a disinfectant. While preservatives play a distinct role in organ preservation, cleaning agents are focused more on removing dirt and debris rather than killing pathogens, and natural products might not have the efficacy needed to function as a disinfectant in a clinical setting. Thus, the definition referring to the capability of killing viruses and bacteria is the most accurate and relevant in the context of healthcare.