Lexic.us

Definition of Relative molecular mass

1. Noun. (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule.

Medical Definition of Relative molecular mass

1. The sum of the atomic weight's of all the atoms constituting a molecule; the mass of a molecule relative to the mass of a standard atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the mass relative to the dalton and has no units. See: atomic weight. Synonym: molecular mass, molecular weight ratio, relative molecular mass. (05 Mar 2000)

Lexicographical Neighbors of Relative Molecular Mass

Literary usage of Relative molecular mass

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1891)
"In other words, the number expressing the relative molecular mass of an element, represents in milligrammes the absolute mass of a quadrillion atoms of that ..."

2. Opportunities In High Magnetic Field Science by National Academy of Sciences (U.S.), National Research Council (U. S.) (2005)
"... for the Department of Energy. macromolecule: Molecule of high relative molecular mass the structure of which usually consists of multiply repeated units ..."

3. Guide for the Use of the International System of Units (SI) by B. N. Taylor (1995)
"8.4 Relative atomic mass and relative molecular mass The terms atomic weight ... relative molecular mass (formerly molecular weight): ratio of the average ..."

4. Gene Expression in Field Crops: Bibliography January 1991-November 1992 edited by Janet Saunders, Robert D. Warmbrodt (1995)
"... found to encode a deduced protein sequence of 226 amino acids with a relative molecular mass of 24850, which was most closely related to the ras-related ..."

5. Lost Crops of Africa: Grains edited by F. R. Ruskin (1999)
"One HSP—often called HSP70 because it has a relative molecular mass of 70000—may ensure that heat-damaged proteins regain their proper shape so that they ..."

6. Code of Federal Regulations 21 Food and Drugs: Parts 170 to 199 Revised as by U.s. Gpo (2005)
"... "Standard Test Method for Molecular Weight (relative molecular mass) of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure," which is ..."

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