Definition of "toxicity" []

• The quality or condition of being toxic. (noun)
• The degree to which a substance is toxic. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Life-threatening theophylline toxicity is not predictable by serum levels."
• "Treatment of colchicine toxicity is largely supportive."
• "The report recommends that mammary tissue be routinely included in toxicity testing of any chemical."