hypergolic

== English == === Etymology === From Ancient Greek ὑπέρ (hupér) + ἔργον (érgon, “work”) + -ol + -ic, after the model of German Hypergol and hypergolisch. Equivalent to hypergol + -ic. === Pronunciation === IPA(key): /hʌɪpɚˈɡɒlɪk/ === Adjective === hypergolic (not comparable) (chemistry, aeronautics, of a reactant, fuel, or propellant) Igniting spontaneously upon contact with an oxidizer. 2016, Pasquale M. Sforza, Theory of Aerospace Propulsion, 2nd ed., Elsevier (Butterworth-Heinemann), page 565: Although the LF2-LH2 cryogenic combination is hypergolic, the toxicity of the fuel and the products of combustion have made the use of this system impractical. In general, the commonly used hypergolic propellants are considered conventionally storable, that is, they do not need special refrigeration equipment to keep them liquid. (chemistry, aeronautics, of a reaction) Involving such a hypergolic agent. ==== Derived terms ==== ==== Translations ==== === Noun === hypergolic (countable and uncountable, plural hypergolics) A hypergolic propellant; a hypergol. === Anagrams === hyperlogic