dalton
dalton dalton n. [from the chemist John Dalton, proponent of the modern atomic theory of matter.] a unit of mass, approximately 1.66 x 10^{-24} grams; -- it is approximately equal to the mass of one hydrogen atom, but the exact value differs slightly as used in physics and chemistry. It is used mostly to describe the size of proteins and nucleic acids in biochemistry.

Note: Molecular weights are often expressed as dimensionless units, the unit being understood (in chemistry) to be the atomic mass unit with carbon equal to 14. Thus having a ``molecular weight of 255'' means the same as each molecule having a mass of 255 daltons.

Syn: Syn. atomic mass unit. [PJC]


The Collaborative International Dictionary of English. 2000.

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  • Dalton — steht für: Dalton (Familienname), der Familienname Dalton Die Daltons (Comicfiguren), Comicfiguren Dalton, Maßeinheit der Masse, Synonym für die atomare Masseneinheit Dalton Highway, Hauptverkehrsstraße in Alaska Daltonsches Gesetz Dalton ist… …   Deutsch Wikipedia

  • Dalton — Dalton, NE U.S. village in Nebraska Population (2000): 332 Housing Units (2000): 170 Land area (2000): 0.343611 sq. miles (0.889948 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.343611 sq. miles (0.889948 sq …   StarDict's U.S. Gazetteer Places

  • Dalton — Saltar a navegación, búsqueda John Dalton (1766 1844), químico y físico británico. sir Joseph Dalton Hooker (1817 1911) botánico y explorador británico. Los Hermanos Dalton fueron unos ladrones del Oeste de EE. UU. Grattan (1861 1892), Bob… …   Wikipedia Español

  • DALTON — DAL Unité de masse souvent utilisée par les biochimistes, le dalton, qui est la masse d’un atome d’hydrogène, vaut 1,67 憐 10 24 g. Il est symbolisé par Da; le kilodalton s’écrit kDa. dalton [ daltɔn ] n. m. • 1973; 1938 en angl.; de Dalton, n. pr …   Encyclopédie Universelle

  • DALTON — (Heb. דַּלְתּוֹן), moshav in central Upper Galilee, 4 mi. (7 km.) N. of Safed. During most of the Middle Ages, Dalton had a considerable Jewish population and it was believed that the tomb of R. yose ha gelili was located there. In the Crusader… …   Encyclopedia of Judaism

  • Dalton — n. John Dalton, scientist, born 1766, died 1844. Syn: John Dalton. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • Dalton —    DALTON, a parish, in the county of Dumfries; containing 638 inhabitants, of whom 54 are in the village, 6 miles (W. by S.) from Ecclesfechan. The name is derived from the Anglo Saxon term Dal ton, or Dal dun, signifying the fort in the dale,… …   A Topographical dictionary of Scotland

  • dalton — Unidad estándar de masa de los átomos. Un protón tiene una masa de 1.007 Daltons y un electrón una masa de 0.0005 daltons, por lo que en la práctica 1 Dalton es igual a la masa de un átomo de hidrógeno Diccionario ilustrado de Términos Médicos..… …   Diccionario médico

  • Dalton — in reference to a system of school education designed by Helen Parkhurst, 1920, from Dalton, Massachusetts, U.S., where it was first adopted. For Daltonism see COLOR BLINDNESS (Cf. color blindness) …   Etymology dictionary

  • dalton — [dôlt′ n] n. [after DALTON John] ATOMIC MASS UNIT …   English World dictionary

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