- The definition of a poison is a substance that destroys, makes sick or kills, or anything that is harmful to happiness.
- An example of a poison is cyanide.
- An example of a poison is a negative attitude that destroys a positive environment.
- Poison is defined as to give or put in a substance that destroys, makes sick or kills, or to corrupt a mind.
- An example of poison is to pour lethal drugs into food.
- An example of poison is to tell a child that they will never amount to anything; to poison the child's mind.
- a substance causing illness or death when eaten, drunk, or absorbed even in relatively small quantities
- anything harmful or destructive to happiness or welfare, such as an idea, emotion, etc.
- in a nuclear reactor, a substance, as boron, that readily absorbs thermal neutrons from a chain reaction, thereby decreasing the reactivity of a reactor core: it is used for safety or control
- Chem. a substance that inhibits or destroys the activity of a catalyst, enzyme, etc. or that interferes with or checks a reaction
Origin of poisonOld French ; from Classical Latin potio, potion
- to give poison to; harm or destroy by means of poison
- to put poison on or into
- to influence wrongfully; corrupt: to poison someone's mind
poisonous or poisoned
- A substance that causes injury, illness, or death, especially by chemical means.
- Something destructive or fatal.
- Chemistry A substance that inhibits another substance or a reaction: a catalyst poison.
transitive verbpoi·soned, poi·son·ing, poi·sons
- To kill or harm with poison.
- To put poison on or into: poisoning arrows; poisoned the drink.
- a. To pollute: Noxious fumes poison the air. See Synonyms at contaminate.b. To have a harmful influence on; corrupt: Jealousy poisoned their friendship.
- Chemistry & Physics To inhibit (a substance or reaction).
Origin of poisonMiddle English, from Old French, from Latin pōtiō, pōtiōn-, drink; see pō(i)- in Indo-European roots.
alexipharmac, alexipharmic a remedy for or antidote against poison or infection. —alexipharmic, adj. atropism poisoning caused by atropine or belladonna. barbiturism a condition of chronic poisoning caused by excessive use of barbiturates. botulism a disease of the nervous system caused by botulin developments in spoiled foods eaten by animals and man; a variety of bacterial food poisoning. cantharidism a toxic condition caused by the misuse of the counterirritant and diuretic cantharides. enriositatis drunkenness or intoxication from alcohol, especially as an habitual state. enterotoxemia a condition in which the blood contains toxin from the intestines. ergotism a condition caused by eating rye or some other grain infected with ergot fungus or by an overdose of an ergot medicinal agent. iophobia an abnormal fear of poisons. Cf. toxiphobia. mephitism mephitic or carbon dioxide poisoning. —mephitic, mephitical, adj. mithridatism the production of immunity against the action of a poison by consuming it regularly in gradually larger doses. mycetism any of a variety of toxic conditions produced by poisonous mush-rooms. Also mycetismus. phosphorism chronic phosphorus poisoning. plumbism an acute toxic condition caused by the absorption of lead into the body by skin contact, ingestion, or inhalation; lead poisoning. Also called saturnism. plutonism a poisoning caused by exposure to radioactive plutonium. ptyalism excessive salivation, usually associated with chronic mercury poisoning. rodenticide a substance that kills rodents. salicylism a toxic condition produced by excessive intake of salicylic acid, marked by vomiting and ringing in the ears. salmonellosis an illness caused by food tainted with certain species of salmonella bacteria. sapremia, sapraemia blood poisoning caused by putrefactive microorganisms in the bloodstream. saturnism plumbism. septicemia blood poisoning caused by pathogenic microorganisms and their toxic products in the bloodstream. —septicemic, septicaemic, adj. stibialism poisoning from antimony. strychnism a toxic condition caused by excessive use of strychnine. tabacism addiction to tobacco; poisoning from excessive use of tobacco. Also called tabagism, tobaccoism. thebaism Archaic. a toxic condition produced by thebaine, a derivative of opium. toxicology the branch of medical science that studies the effects, antidotes, detection, etc., of poisons. —toxicologist, n. —toxicologie, toxicological, adj. toxiphobia an abnormal fear of poisoning. Also called toxicophobia. Cf. iophobia. —toxiphobe, toxiphobiac, n. tyrotoxism poisoning caused by microbes in stale cheese or milk. urotoxy, urotoxia 1. the toxicity or toxic content of urine. 2. the unit used in measuring the toxicity of urine, a quantity sufficient to kill an animal weighing one kilogram. —urotoxic, adj.
(third-person singular simple present poisons, present participle poisoning, simple past and past participle poisoned)
- To use poison to kill or paralyse somebody
- The assassin poisoned the king.
- To pollute; to cause some part of the environment to become poisonous
- That factory is poisoning the river.
- To cause something to become much worse
- Suspicion will poison their relationship.
- He poisoned the mood in the room with his non-stop criticism.
- To cause someone to hate or to have unfair negative opinions
- She's poisoned him against all his old friends.
OriginSee also: poisson