Share this entry
hypergolic Syllabification: hy·per·gol·ic
Pronunciation: /ˌhīpərˈɡälik/

Definition of hypergolic in English:


(Of a rocket propellant) igniting spontaneously on mixing with another substance.
Example sentences
  • The Titan uses Aerojet-General LR87 and LR91 engines burning liquid hypergolic propellants that ignite spontaneously on contact.
  • Other onboard power sources serve as latent explosion triggers, including batteries, other pressurized systems, fuel cells and hypergolic fuels.
  • The testing of the hypergolic performance of the formulations can be achieved without gelling.


1940s: from German Hypergol, probably from hyper- 'beyond' + Greek ergon 'work' + -ol.

Definition of hypergolic in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources