Толковый словарь английского языка - hydrogen
Hydrogen
hydrogen
noun Etymology: French hydrogène, from hydr+ -gène -gen; from the fact that water is generated by its combustion Date: 1788 a nonmetallic element that is the simplest and lightest of the elements, is normally a colorless odorless highly flammable diatomic gas, and is used especially in synthesis, ~ous adjective
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1.
n. Chem. a colourless gaseous element, without taste or odour, the lightest of the elements and occurring in water and all organic compounds. Usage Symb.: H. Phrases and idioms hydrogen bomb an immensely powerful bomb utilizing the explosive fusion of hydrogen nuclei: also called H-BOMB. hydrogen bond a weak electrostatic interaction between an electronegative atom and a hydrogen atom bonded to a different electronegative atom. hydrogen peroxide a colourless viscous unstable liquid with strong oxidizing properties. Usage Chem. formula: H2O2 hydrogen sulphide a colourless poisonous gas with a disagreeable smell, formed by rotting animal matter. Usage Chem. formula: H2S Derivatives hydrogenous adj. Etymology: F hydrog{egrave}ne (as HYDRO-, -GEN) ...Толковый словарь английского языка Oxford English Reference
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