disinfectant
noun
Note: Common chemical disinfectants include chlorine, calcium and sodium hypochlorite, iodophor, phenol, ethanol, and quaternary ammonium compounds. Disinfectants are often distinguished from sterilants by having reduced effectiveness against dormant bacterial endospores.
Examples of disinfectant in a Sentence
Maria Sabella, The Spruce, 8 Feb. 2026
Make sure to follow the manufacturer's instructions for the disinfectant product, including contact time (the time the surface needs to remain wet with the disinfectant to be effective).
—Daley Quinn, Southern Living, 8 Feb. 2026
Like ammonia, disinfectant wipes can leave behind chemicals toxic to birds.
—Madeline Buiano, Martha Stewart, 5 Feb. 2026
If a shower mat is not used, wipe the tub clean with a disinfectant after your shower.
—Bestreviews, Chicago Tribune, 30 Jan. 2026
See All Example Sentences for disinfectant
Cite this Entry
“Disinfectant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/disinfectant. Accessed 15 Feb. 2026.
Copy CitationMedical Definition
disinfectant
1 of 2 noun
Note: Common chemical disinfectants include chlorine, calcium and sodium hypochlorite, iodophor, phenol, ethanol, and quaternary ammonium compounds. Disinfectants are often distinguished from sterilants by having reduced effectiveness against dormant bacterial endospores.
disinfectant
2 of 2 adjective
