Pronunciation: ˌ h ī -p ə r- ' gä-lik
Function: adjective
Etymology: German Hypergol a hypergolic fuel, probably from hyper- + erg- + -ol (hydrocarbon)
Date: 1947
1 : igniting upon contact of components without external aid (as a spark)
2 : of, relating to, or using hypergolic fuel
– hy · per · gol · i · cal · ly \ -li-k( ə -)l ē \ adverb