- 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: OFr 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
- poisoner noun
Used by arrangement with John Wiley & Sons, Inc.
- A substance that causes injury, illness, or death, especially by chemical means.
- Something destructive or fatal.
- Chemistry & Physics A substance that inhibits another substance or a reaction: a catalyst poison.
- 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: Middle English, from Old French, from Latin pōtiō, pōtiōn-, drink; see pō(i)- in Indo-European roots.
- poiˈson·er noun
poison - Ologies & -Isms Definition
poison - Medical Definition
- A substance taken internally or applied externally that is injurious to health or dangerous to life.
- A chemical substance that inhibits another substance or a reaction.