Two hydrogen atoms in a molecule

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  • dihydro- — dihydr , dihydro ❖ ♦ Élément utilisé en chimie, de di , et hydr , hydro , indiquant l addition, dans une molécule, de deux atomes d hydrogène (ex. : dihydrocholestérol, n. m.; dihydroergotamine, n. f.; dihydrostreptomycine, n. f.) …   Encyclopédie Universelle

  • dihydro — di·hy·dro (.)drō adj combined with two atoms of hydrogen <cortisol is a dihydro derivative of cortisone> often used in combination …   Medical dictionary

  • dihydro- — combining form see dihydr …   New Collegiate Dictionary

  • dihydro- — Prefix indicating the addition of two hydrogen atoms. [G. di, two + hydor, water] * * * a chemical prefix denoting the presence of two additional hydrogen atoms …   Medical dictionary

  • Dihydro- — Di|hy|d|ro [↑ di u. ↑ hydro (2)]: Präfix in den Additionsnamen von org. Verb., die gegenüber der Stammverbindung einen Mehrgehalt von zwei H Atomen aufweisen (z. B. Dihydropyran), sowie in Bez. von Reaktionen, die mit der Aufnahme von zwei H… …   Universal-Lexikon

  • dihydro — di·hy·dro …   English syllables

  • dihydro- — a prefix denoting an additional two hydrogen atoms in the molecule …   Australian English dictionary

  • dihydro — (ˈ)dī|hī(ˌ)drō adjective Etymology: dihydr : combined with two atoms of hydrogen …   Useful english dictionary

  • dihydro- — combining form see dihydr …   Useful english dictionary

  • dihydro-orotase — An enzyme catalyzing ring closure of N carbamoyl l aspartate to form l 5,6 dihydroorotate and water; an enzyme in pyrimidine biosynthesis. SYN: carbamoylaspartate dehydrase …   Medical dictionary

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