1) Cytotoxicity 2) Insalubrity 3) Perniciousness 1) Deadliness 2) Definite quantity 3) EPA concern 4) Intensity of a poison 5) Poisonous quality 
The capacity of a compound to produce injury or death. 
• (n.) The quality or state of being toxic or poisonous; poisonousness.
Inherent capacity of a material to produce death or injury.
(from the article `cnidarian`) All cnidarians have the potential to affect human physiology owing to the toxicity of their nematocysts. Most are not harmful to humans, but some can ... [21 related articles]
The extent to which something is poisonous or harmful.
The ability of a substance to cause a harmful effect.The degree to which a substance is poisonous.
intensity of a poison.
Levels of harmful ingredients in paint such as solvents and heavy metals including lead and chrome.
(tok-sis´ĭ-te) the quality of being poisonous, especially the degree of virulence of a toxic microbe or of a poison. developmental toxicity the extent to which a toxin crosses the placental barrier and produces adverse effects on a developing embryo or fetus; see also teratogenesis. ...
Harmful side effects from an agent being tested.
The adverse reactions (dose-response time relationships) of tissues to selected foreign substances rDegree to which something is poisonous; the ability of a material to interfere adversely with the vital processes or an organism.The degree to which a substance or mixture of substances can harm humans or animals.(Living things in their environment) degree of harmfulness
Tox·ic'i·ty noun The quality or state of being toxic or poisonous; poisonousness. 
the biological effect of a substance. In this context, toxicity and hazard are used interchangeably.
The degree to which a substance or mixture of substances can harm humans or animals. Acute toxicity involves harmful effects in an organism through a single or short-term exposure. Chronic toxicity is the ability of a substance or mixture of substances to cause harmful effects over an extended period, usually upon repeated or continuous exposure so...
Side effects.
the extent to which a substance is poisonous 
noun the degree to which something is poisonous
Potency; amount of a poison that will cause an adverse effect.