What does bacteriostasis mean?
Bacteriostasis is the inhibition or arrest of bacterial growth and reproduction. Unlike a bactericidal effect, which kills bacteria, it may leave them alive but unable to multiply. The term is chiefly used in microbiology, pharmacology, medicine, and food science, where substances that suppress bacterial growth are described as bacteriostatic. A bacterium that remains viable but cannot reproduce can still contribute to resistance if the compound is removed before the population recovers. In materials science, bacteriostasis can also refer to organisms held in a state of dormant or arrested growth on surfaces and fabrics. The word is specialized rather than conversational, but it names an important distinction: slowing or stopping a microbial population is not necessarily the same as destroying it. This distinction matters in clinical treatment, antimicrobial testing, and preservation contexts.
nounThe inhibition or arrest of bacterial growth and reproduction. It refers to the suppression of bacterial activity, whether or not the bacteria are killed.
- The inhibition or arrest of bacterial growth and reproduction, especially by an antimicrobial substance or environmental condition.
"The new coating achieved bacteriostasis without damaging the bacteria or contaminating the surface."
"Silver ions contributed to the bacteriostasis of the contaminated culture."
"The antibiotic produced bacteriostasis, allowing the clinician to observe whether the infection responded without immediately eliminating every bacterium."
The plural is grammatically possible but rarely used; singular bacteriostasis is normally preferred.
"The bacteriostases produced by the two compounds were compared under identical conditions."
Bacteriostasis stops bacteria at the starting line: their growth is halted, but the microbes are not necessarily killed.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does bacteriostasis come from?
Bacteriostasis was formed in scientific Latin from Greek bakterion, meaning “rod” or “staff,” and Greek stasis, meaning “a standing still” or “stopping.” Bakterion derives from baktron, an ancient Greek word for a staff or stick. In cognates such as bacterial, bacteriology, and bactericide, the combining form bacter- preserves this same scientific-Latin development.
Related word forms
How bacteriostasis is actually used
A chiefly technical term used in microbiology, pharmacology, medicine, food science, and materials science. It is more precise than a general reference to bacterial inhibition because it specifically emphasizes arrested growth or reproduction rather than bacterial destruction.
Easily confused with bacteriostasis
Bacteriostasis suppresses bacterial growth or reproduction, whereas bacteriolysis denotes the destruction or dissolution of bacterial cells.