American Heritage Dictionary
(2)
Century Dictionary
(2)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Some of this toxicity is associated with the widely acclaimed method of minimum tillage.— Cornucopia Institute
These root causes can include parasites, heavy metal toxicity which is more common than you'd expect and organ congestion.— Find Free Articles - ArticlesBase
Sky News has in fact taken the same decision for the same reason, but, as ever, the fact that the BBC is paid for by a poll tax lends its decisions a political toxicity which is peculiar to itself.— The Independent - Frontpage RSS Feed
The study found that the drug combination showed an anti-tumor response in about 30 percent of the 22 young sarcoma patients who received the drugs, and that the toxicity was manageable.
The authors showed that a low amount of vitamin D boosted the ability of progesterone to protect neurons from excito-toxicity, a principal cause of brain injury and cell death.

Century Dictionary (1)
Bubble size: how much this word was used in a year
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You can expect to see this word about twice a month.