1. describes a substance capable of causing harm or death, biochemically, to an organism or the environment
2. imparting a bad influence on something; potentially fatal
2. in the near future, as a result of this UD definition, the new it word for cool.
1. Hydrochloric acid is a toxic chemical.
2. Religious fundamentalism is toxic to the human race.
3. Dude, that's a sick fuckin' shirt - it's so sick it's toxic!
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