- Of, relating to, or caused by a toxin or other poison: a toxic condition; toxic hepatitis.
- Capable of causing injury or death, especially by chemical means; poisonous: food preservatives that are toxic in concentrated amounts; a dump for toxic industrial wastes. See synonyms at poisonous.
A toxic chemical or other substance.
[Late Latin toxicus, from Latin toxicum, poison, from Greek toxikon, poison for arrows, poison, from neuter of toxikos, of a bow, from toxon, bow, from Old Persian *taxša-, an arrow.]
toxically tox'i·cal·ly adv.




