If you are poisoned by a substance, it makes you very ill and sometimes kills you. Employees were taken to hospital yesterday after being poisoned by fumes Toxic waste could endanger lives and poison fish. + poisoning poi·son·ing His illness was initially diagnosed as food poisoning
Any substance that is injurious to health and may lead to death when relatively small amounts are taken either internally or externally
Any molecule or material that tends to collect on a catalyst surface, blocking access to active sites or destroying their activities
If someone poisons another person, they kill the person or make them ill by giving them poison. The rumours that she had poisoned him could never be proved. + poisoning poi·son·ing She was sentenced to twenty years' imprisonment for poisoning and attempted murder
the ability of a chemical, such that very small amounts are able to produce injury to susceptible tissues by a chemical action
To poison water, air, or land means to damage it with harmful substances such as chemicals. The land has been completely poisoned by chemicals. dying forests, poisoned rivers and lakes
(1) any substance that causes injury, illness, or death, especially by chemical means; (2) a substance that inhibits or retards a chemical reaction
That which taints or destroys moral purity or health; as, the poison of evil example; the poison of sin
Any agent which, when introduced into the animal organism, is capable of producing a morbid, noxious, or deadly effect upon it; as, morphine is a deadly poison; the poison of pestilential diseases
If someone poisons a food, drink, or weapon, they add poison to it so that it can be used to kill someone. If I was your wife I would poison your coffee. + poisoned poi·soned He was terrified to eat, suspecting that the food was poisoned. an umbrella tipped with a poisoned dart