Definition of "herbicide" []

• A chemical substance used to destroy or inhibit the growth of plants, especially weeds. (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.

• "The method invented by Heck is used in herbicide production, the academy said."
• "In his article, Dr. Carrasco describes some disturbing findings in Argentina, where more than 50 million gallons of glyphosate-based herbicide is used on more than 45 million acres of GM soy."
• "Paraquat is described as a quick-acting, non-selective herbicide, which is poisonous to humans if even a small amount is swallowed or enters the blood stream."