What does mutagenicity mean?
Mutagenicity is the capacity of a substance, material, or biological agent to cause changes in DNA, known as mutations. The term is especially common in toxicology, pharmacology, environmental science, and chemical regulation, where researchers assess whether a substance could damage genetic material or create heritable changes in cells. A finding of mutagenicity does not necessarily mean that a substance causes cancer, although mutations can contribute to serious biological effects. For example, a safety report may state that a compound was tested for mutagenicity and showed no significant mutagenic activity. The word is related to mutagenic, meaning “causing mutations,” and to mutagenesis, the process by which mutations occur. It is a specialized term rather than everyday vocabulary, but it is important whenever the effects of chemicals or radiation on genetic material are being evaluated.
nounThe capacity of a substance or agent to cause genetic mutations. It is commonly used in toxicology and pharmacology to describe a potential harmful biological effect.
- The property or capacity of causing genetic mutations.
"The researchers tested the compound's mutagenicity before approving it for further study."
"The laboratory reported no significant mutagenicity for the formulation under the tested conditions."
"Because mutagenicity can affect future generations, regulators often evaluate it as part of a chemical safety assessment."
The plural is possible but uncommon; most uses refer to the general property rather than to multiple distinct instances.
"The study compared the mutagenicities of several agricultural chemicals."
A mutagenic substance can leave a lasting mark by changing the genetic instructions passed to future cells.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mutagenicity come from?
The word is formed from muta-, referring to change, together with the suffix -gen, “producing,” and the abstract ending -icity. Its relatives include mutagenic, mutagen, and mutagenesis, all of which concern the production or study of mutations. The terminology belongs to the modern scientific vocabulary of genetics and biology.
Related word forms
How mutagenicity is actually used
This is primarily a scientific term used in toxicology, pharmacology, environmental science, and regulatory assessment. It is usually uncountable when referring to a general property, although the plural is possible when discussing different substances or types of mutagenicity.
Easily confused with mutagenicity
Mutagenicity refers to the ability to cause genetic mutations, whereas carcinogenicity refers to the ability to cause cancer.
Genotoxicity is the broader capacity to damage DNA or interfere with DNA processes, while mutagenicity more specifically concerns the production of mutations.