What does sterile mean?
Sterile is an adjective with several related meanings. Most commonly, it describes something free from living microorganisms or other contamination, as in sterile water, sterile gloves, or a sterile operating room. In biology and agriculture, it means unable to reproduce or produce offspring, often used of land, animals, plants, or people in a clinical context. Figuratively, sterile describes work, ideas, or environments that lack creativity, vitality, or emotional warmth. The word can sound clinical and impersonal, especially when applied to art, relationships, or landscapes, and it may imply that something is technically pure but lifeless. Sterile developed through French from Latin sterilis, an ancient term for barren or unproductive. Its meanings have broadened from the absence of reproductive capacity to the absence of contamination and, more recently, to a wider description of barrenness or lifelessness.
adjectiveFree from microorganisms or other contamination; unable to reproduce or produce offspring; or lacking vitality, creativity, or productive results.
- Free from microorganisms or other contamination.
- Unable to reproduce or produce offspring.
- Lacking creativity, vitality, or the capacity to produce useful results.
"The laboratory kept the instruments in a sterile environment to prevent contamination."
"The surgeon used sterile gloves and instruments throughout the operation."
"Years of routine left his artistic work sterile and difficult to distinguish from that of his colleagues."
Sterile comes from the Latin sterilis, originally meaning barren or unproductive—a word that still links cleanliness with the absence of life.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does sterile come from?
The word entered English in the late 16th century via French stérile, from Latin sterilis, meaning barren, unproductive, or unable to bear offspring. Latin sterilis was also extended to refer to things lacking fertility or productive power. English later developed the closely related forms sterility and sterilize, and the word's scientific sense—free from microorganisms—became especially prominent with advances in medicine and laboratory practice.
Related word forms
How sterile is actually used
In medical and laboratory contexts, sterile specifically implies the absence of viable microorganisms, a stronger condition than merely clean. Figurative uses are generally formal and often suggest dryness, emotional detachment, or unimaginative conformity.
Easily confused with sterile
Sterile is an adjective describing something already free of contamination, while sterilize is a verb meaning to make something sterile.