hypergolic

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hy⋅per⋅gol⋅ic

[hahy-per-gaw-lik, -gol-ik]

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–adjective

(esp. of rocket-fuel propellant constituents) igniting spontaneously upon contact with a complementary substance.

Origin:
1945–50; hyp(er)- + erg- + -ol ² + -ic

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Based on the Random House Dictionary, © Random House, Inc. 2009.
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hy·per·gol·ic (hī'pər-gŏl'ĭk)

adj.

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

[From German Hypergol, a hypergolic fluid propellant : from hyper-, extreme (from Greek huper-; see hyper-) + Greek ergon, work; see erg.]
hy'per·gol' (hī'pər-gôl', -gōl', -gŏl') n., hy'per·gol'i·cal·ly adv.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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hypergolic (hī'pər-gŏl'ĭk) Pronunciation Key
Relating to or using a rocket propellant consisting of liquid fuel and an oxidizer that ignite spontaneously on contact.

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