Try Our Apps


Gobble up these 8 terms for eating


[par-uh-kwaht] /ˈpær əˌkwɑt/
noun, Chemistry.
a toxic herbicide, C 1 2 H 1 4 N 2 ⋅2CH 3 SO 4 , applied to food and flower crops and to highway borders as a defoliant and weed-killer.
Origin of paraquat
1960-65; para-1 + quat(ernary), in reference to the bond between the two pyridyl groups, which is in the para position with respect to their quaternary nitrogen atoms Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for paraquat


trademark a yellow extremely poisonous soluble solid used in solution as a weedkiller
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for paraquat

quick-acting herbicide, 1961, from para- (1) + first element in quaternary. So called in reference to its chemical configuration.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
paraquat in Medicine

paraquat par·a·quat (pār'ə-kwŏt')
A colorless compound or a related yellow compound used as a herbicide.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
paraquat in Science
A toxic compound used as a herbicide, especially in its colorless, dichloride form (C12H14Cl2N2) or in its yellow, bismethyl sulfate form (C14H20N2O8S2). Paraquat is used primarily to control grass and weeds. Its use in the United States is restricted because of its high level of toxicity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Word Value for paraquat

Scrabble Words With Friends

Nearby words for paraquat