What does teratogenicity mean?
Teratogenicity is the capacity of a drug, chemical, or other agent to cause abnormal development in an embryo or fetus. The term is formal and technical, appearing especially in medicine, pharmacology, toxicology, and reproductive-safety research. Identifying teratogenicity is important because developmental disturbances may involve structural malformations, functional impairments, or other lasting effects. A finding of teratogenicity does not mean that every exposure will cause harm; dose, timing, duration, and biological susceptibility are all relevant. The concept also differs from general toxicity, because teratogenicity specifically concerns adverse effects on prenatal development rather than every possible form of harm. By identifying developmental hazards, the term helps guide safety testing, clinical decisions, regulatory assessment, and public-health policy. Its compact form allows a precise distinction to be made between an agent's capacity to disrupt development and the actual developmental outcome experienced by any particular pregnancy.
nounThe capacity of a substance, drug, chemical, or other agent to cause abnormal development in an embryo or fetus.
- The capacity or potential of a substance or agent to cause developmental abnormalities in an embryo or fetus, especially structural malformations or functional impairments.
"The researchers measured the compound's teratogenicity in laboratory animals."
"The researchers measured the compound's teratogenicity in laboratory animals."
"Her review of the drug's teratogenicity highlighted the need for clearer warnings about exposure during pregnancy."
The plural is grammatically possible but uncommon; singular or uncountable constructions are normally preferred.
"The teratogenicities of the two compounds were compared."
A teratogen is judged not merely by whether it harms an adult, but by whether it can disrupt development before birth.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of teratogenicity
The word ultimately combines the combining form terato-, derived from Greek teras, meaning a monster or prodigy, with the productive element -gen, meaning producing. In medical usage, this root became associated with monstrous or abnormal fetal development. The related adjective teratogenic describes something capable of causing such abnormalities, and the suffix -ity forms the noun teratogenicity to denote that capacity.
How teratogenicity is actually used
This is a formal, uncountable noun used chiefly in medicine, pharmacology, toxicology, and reproductive-safety research. The corresponding adjective is teratogenic.
Easily confused with teratogenicity
Teratogenesis is the process by which abnormal embryonic or fetal development occurs, whereas teratogenicity is the capacity or potential of an agent to cause that process.