Hydrogen
91hydrogen sulfide — n a flammable poisonous gas H2S that has an odor suggestive of rotten eggs and is found esp. in many mineral waters and in putrefying matter * * * H2S, a poisonous gas with an offensive smell, released from decaying organic material, natural gas …
92hydrogen bomb — hydrogen .bomb n a very powerful ↑nuclear bomb …
93hydrogen peroxide — hydrogen per oxide n [U] a chemical liquid used for killing ↑bacteria and for making hair and other substances lighter in colour …
94hydrogen bomb — hydrogen ,bomb noun count an extremely powerful type of nuclear bomb …
95hydrogen peroxide — hydrogen per oxide noun uncount a chemical used to make the color of your hair lighter or to prevent infection …
96hydrogen peroxide — ► NOUN ▪ a colourless viscous liquid used in some disinfectants and bleaches …
97hydrogen sulphide — ► NOUN ▪ a colourless poisonous gas with a smell of bad eggs, made by the action of acids on sulphides …
98hydrogen peroxide — n. a colorless, syrupy liquid, H2O2, often used in dilute, unstable solutions as a bleaching or disinfecting agent, and in more concentrated form as a rocket fuel, in the production of foam rubber, etc …
99hydrogen sulfide — n. a flammable, poisonous gas, H2S, with the characteristic odor of rotten eggs, widely used as a reagent in analytical chemistry …
100Hydrogen economy — The hydrogen economy is a proposed system of delivering energy using hydrogen. The term hydrogen economy was coined by John Bockris during a talk he gave in 1970 at General Motors (GM) Technical Center.[1] Hydrogen advocates promote hydrogen as… …