Meaning of TOXIC in English

TOXIC

I. ˈtäk-sik adjective

Etymology: Late Latin toxicus, from Latin toxicum poison, from Greek toxikon arrow poison, from neuter of toxikos of a bow, from toxon bow, arrow

Date: 1664

1. : containing or being poisonous material especially when capable of causing death or serious debilitation

toxic waste

a toxic radioactive gas

an insecticide highly toxic to birds

2. : exhibiting symptoms of infection or toxicosis

the patient became toxic two days later

3. : extremely harsh, malicious, or harmful

toxic sarcasm

• tox·ic·i·ty täk-ˈsi-sə-tē noun

II. noun

Date: 1890

: a toxic substance — usually used in plural

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.