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1. Of or relating to a rocket propellant consisting of fuel and an oxidizer that ignite spontaneously on contact.
2. Using such a fuel.

[From German Hypergol, a hypergolic fluid propellant : from hyper-, extreme (from Greek huper-; see hyper-) + Greek ergon, work; see erg1.]

hy′per·gol′ (hī′pər-gôl′, -gōl′, -gŏl′) n.
hy′per·gol′i·cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) in a hypergolic manner
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
[7]), where hydrogen peroxide is known to ignite hypergolically with pyrophoric materials such as silane and triethylaluminum (TEA) [8, 9].