[hahy-druh-krak-ing] /ˈhaɪ drəˌkræk ɪŋ/
the of petroleum or the like in the presence of hydrogen.
[hahy-druh-krak] /ˈhaɪ drəˌkræk/
verb (used with object)
to crack (petroleum or the like) in the presence of hydrogen.
A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst. See also cracking.
[hahy-droh-sahy-an-ik] /ˌhaɪ droʊ saɪˈæn ɪk/ adjective 1. of or derived from .
noun 1. a colorless, highly poisonous liquid, HCN, an aqueous solution of hydrogen cyanide. /ˌhaɪdrəʊsaɪˈænɪk/ noun 1. another name for hydrogen cyanide, esp when in aqueous solution hydrocyanic acid hy·dro·cy·an·ic acid (hī’drō-sī-ān’ĭk) n. An aqueous solution of hydrogen cyanide that is a poisonous weak acid. Also called prussic acid. hydrocyanic acid (hī’drō-sī-ān’ĭk) An aqueous solution […]
hydrocyst hy·dro·cyst (hī’drə-sĭst’) n. A cyst having clear watery contents.
[hahy-droh-dee-suhl-fyer-uh-zey-shuh n, -fer-uh-] /ˌhaɪ droʊ diˌsʌl fyər əˈzeɪ ʃən, -fər ə-/ noun 1. desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.