hypergolic

adjective
hy·​per·​gol·​ic | \ˌhī-pər-ˈgä-lik \

Definition of hypergolic 

1 : igniting upon contact of components without external aid (such as a spark)

2 : of, relating to, or using hypergolic fuel

Other Words from hypergolic

hypergolically \ ˌhī-​pər-​ˈgä-​li-​k(ə-​)lē \ adverb

First Known Use of hypergolic

1947, in the meaning defined at sense 1

History and Etymology for hypergolic

German Hypergol a hypergolic fuel, probably from hyper- + erg- + -ol (hydrocarbon)

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The first known use of hypergolic was in 1947

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