noun
1. the degree to which something is poisonous
• Derivationally related forms: ↑toxic
• Hypernyms: ↑definite quantity
• Hyponyms: ↑cytotoxicity
2. grave harmfulness or deadliness
• Syn: ↑perniciousness
• Derivationally related forms: ↑pernicious (for: ↑perniciousness)
• Hypernyms: ↑unwholesomeness, ↑morbidness, ↑morbidity
Useful english dictionary. 2012.