What does sterilizer mean?
A sterilizer is anything used to make an object, substance, or environment sterile. Its primary modern use is for equipment that destroys or removes microorganisms, especially from surgical instruments, laboratory materials, food, and industrial products. Common sterilizers include steam-based autoclaves, chemical systems, and ultraviolet apparatus, although the precise method depends on what is being treated and the standard it must meet. The word may also refer to a chemical agent, with “sterilant” serving as a more specialized synonym in that sense. Compared with ordinary cleaning, sterilization aims to eliminate viable microorganisms rather than simply reduce their number. The distinction is particularly important in medicine, where thorough sterilization of instruments helps prevent infection and transmission of disease. In less specialized usage, the term can also describe a person whose work is to sterilize materials.
nounA device, substance, or person that makes something sterile by eliminating microorganisms capable of causing infection or reproduction.
- An apparatus or device used to sterilize objects, especially medical instruments, food, or laboratory materials.
- A chemical or other agent used to make something sterile.
- A person or organization whose function is to sterilize something.
"The hospital uses a steam sterilizer to disinfect its surgical instruments."
"The laboratory purchased an ultraviolet sterilizer for the operating room."
"Boiling water can act as a simple sterilizer for small instruments."
Used when referring to multiple devices, agents, or people that perform sterilization.
"The clinic installed two new sterilizers for its operating rooms."
A sterilizer does more than clean: it is designed to eliminate the microorganisms that ordinary cleaning may leave behind.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does sterilizer come from?
“Sterilizer” was formed in the 19th century from “sterilize” plus the agent suffix “-er.” “Sterilize” in turn comes from “sterile,” a word borrowed from Latin sterilis, meaning “barren” or “unproductive.” The Latin root was applied to organisms unable to reproduce and later extended to the removal of microorganisms capable of reproduction or causing infection.
How sterilizer is actually used
In medical, laboratory, and food-processing contexts, “sterilizer” commonly denotes a machine or piece of equipment. As a chemical agent, it overlaps with “sterilant,” though “sterilant” is the more specialized term. The third sense is comparatively uncommon.
Easily confused with sterilizer
A sterilizer is usually equipment or an agent that performs sterilization, whereas a sterilant more specifically denotes a chemical substance used to achieve it.