What is the meaning of Toxic?

Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

Appearing grossly unwell; characterised by serious, potentially life-threatening compromise in the respiratory, circulatory or other body systems.

Severely negative or harmful.

Hateful or strongly antipathetic.

toxic (chemically noxious to health)

toxic

Source: wiktionary.org