What does poisoning mean?
Poisoning names both the deliberate or accidental introduction of a toxic substance and the resulting harm. It is used especially in medical and legal contexts, as in food poisoning, carbon monoxide poisoning, or suspected poisoning. The condition can involve relatively mild symptoms or fatal injury, depending on the substance, dose, and speed of treatment. A second, figurative sense describes an attempt to corrupt or obstruct a discussion or process, as in the legal metaphor “to poison the well,” meaning to make a fair inquiry impossible by introducing irrelevant or misleading material. The word is normally a gerund-form noun and should not be confused with poison, which identifies the harmful substance rather than the act or its consequences.
nounThe act of giving or exposing someone or something to a poison, or the resulting condition of illness or injury caused by a toxic substance. The word can also refer metaphorically to the deliberate undermining of something valuable, as in “poisoning the well.”
- The administration of a poison to a person, animal, or organism, especially with the intention of causing harm.
- The illness, injury, or death resulting from exposure to a toxic substance.
- The deliberate corruption or undermining of a discussion, argument, institution, or other shared resource so that it can no longer function impartially.
"The hospital confirmed that the child’s illness had been caused by accidental poisoning from contaminated medication."
"Investigators found evidence of deliberate poisoning in the minister’s tea."
"Rather than answer the question, the witness poisoned the inquiry with misleading claims."
Used for separate acts of poisoning or separate cases in which poisoning occurs.
"The report documented three distinct poisonings at the restaurant."
From toxic honey to contaminated medicine, the word covers a wide range of dangers—and, figuratively, some of history’s subtler acts of sabotage.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does poisoning come from?
The word poisoning combines poison with the English suffix -ing, which forms a gerund or verbal noun. Poison entered English from Old French poison, ultimately from the Latin toxicum, meaning “poison” or “poisonous substance,” a term associated with the Greek root for poison. Related English words such as toxic, toxicity, and toxicology continue this Latin and Greek etymological inheritance.
Related word forms
How poisoning is actually used
In its literal sense, the term is formal and often appears in medical, legal, and investigative contexts. The figurative sense, especially in “poisoning the well,” is rhetorical and denotes prejudicing a discussion or obstructing fair consideration rather than causing physical harm.
Easily confused with poisoning
A poison is the poisonous substance itself, whereas poisoning is the act of administering it or the condition caused by exposure to it.