Definitions
from the GNU version of the Collaborative International Dictionary of English.
- noun 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.
- noun John Dalton, scientist, born 1766, died 1844.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics the
atomic mass unit
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun English chemist and physicist who formulated atomic theory and the law of partial pressures; gave the first description of red-green color blindness (1766-1844)
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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Yes | No | Report from george dalton wrote 1 year 1 day ago
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Yes | No | Report from george dalton wrote 51 weeks 3 days ago
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Yes | No | Report from george dalton wrote 1 year 13 min ago thanks to mharaldson for the link to the dnr website. clearly a bobcat, a big one, but a bobcat nonetheless. just another reminder that bigger is not always better, and that hunger is a powerful motivator!
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Yes | No | Report from george dalton wrote 1 year 13 min ago thanks to mharaldson for the link to the dnr website. clearly a bobcat, a big one, but a bobcat nonetheless. just another reminder that bigger is not always better, and that hunger is a powerful motivator!
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Yes | No | Report from george dalton wrote 51 weeks 3 days ago
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Yes | No | Report from george dalton wrote 1 year 1 day ago
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Did the Bishop bar those priest from receiving communion who sexually molested young boys too? dan dalton
Bishop bars Patrick Kennedy from communion over abortion 2009
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SHUT UP by dalton on Friday, Dec 4, 2009 at 6: 59: 41 PM
Will Congress Criminalize Anti-Semitism and Israeli Criticism? 2009
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"Shut Up" was reply to PAZ by dalton on Friday, Dec 4, 2009 at 7: 01: 31 PM
Will Congress Criminalize Anti-Semitism and Israeli Criticism? 2009
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"Shut Up" was reply to PAZ by dalton on Friday, Dec 4, 2009 at 7: 01: 31 PM
Will Congress Criminalize Anti-Semitism and Israeli Criticism? 2009
sionnach commented on the word dalton
an alternate name for the unified atomic mass unit (u or amu). The dalton is often used in microbiology and biochemistry to state the masses of large organic molecules; these measurements are typically in kilodaltons (kDa). It seems necessary to have such a unit, since "kilo-amu" would be such a clumsy name. The SI accepts the dalton as an alternate name for the unified atomic mass unit and specifies Da as its proper symbol. The unit honors the English chemist John Dalton (1766-1844), who proposed the atomic theory of matter in 1803.
January 21, 2008