- molecular weight
- noun Date: 1869 the average mass of a molecule of a compound compared to 1/12 the mass of carbon 12 and calculated as the sum of the atomic weights of the constituent atoms
New Collegiate Dictionary. 2001.
molecular weight
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Molecular weight — Molecular Mo*lec u*lar, a. [Cf. F. mol[ e]culare. See {Molecule}.] (Phys. & Chem.) Pertaining to, connected with, produced by, or consisting of, molecules; as, molecular forces; molecular groups of atoms, etc. [1913 Webster] {Molecular… … The Collaborative International Dictionary of English
molecular weight — n the mass of a molecule that may be calculated as the sum of the atomic weights of its constituent atoms * * * the weight of a molecule of a substance as compared with that of an atom of carbon 12; it is equal to the sum of the atomic weights of … Medical dictionary
molecular weight — n. the relative average weight of a molecule of a substance, expressed by a number equal to the sum of the atomic weights of all atoms in the molecule … English World dictionary
molecular weight — Chem. the average weight of a molecule of an element or compound measured in units once based on the weight of one hydrogen atom taken as the standard or on 1/16 the weight of an oxygen atom, but after 1961 based on 1/12 the weight of the carbon… … Universalium
molecular weight — UK / US noun [countable/uncountable] Word forms molecular weight : singular molecular weight plural molecular weights science the total of the atomic weights of all the elements in a compound … English dictionary
molecular weight — santykinė molekulinė masė statusas T sritis Standartizacija ir metrologija apibrėžtis Molekulės vidutinės masės arba tiksliai apibrėžto medžiagos darinio masės ir nuklido ¹²C atomo masės 1/12 dalies dalmuo. atitikmenys: angl. molecular mass;… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
molecular weight — santykinė molekulinė masė statusas T sritis Standartizacija ir metrologija apibrėžtis Molekulę sudarančių atomų santykinių atominių masių suma, skaitine verte lygi medžiagos molio masei. atitikmenys: angl. molecular mass; molecular weight;… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
molecular weight — santykinė molekulinė masė statusas T sritis chemija apibrėžtis Molekulę sudarančių atomų santykinių atominių masių suma, skaitine verte lygi vieno medžiagos molio masei. atitikmenys: angl. molecular mass; molecular weight; relative molecular mass … Chemijos terminų aiškinamasis žodynas
molecular weight — (MW) The sum of the atomic weights of all of the atoms within a molecule. Generally, molecules of the same type have higher boiling points if the molecular weight is higher … Forensic science glossary
Molecular Weight Cut Off — or MWCO refers to the lowest molecular weight solute (in Daltons) in which 90% of the solute is retained by the membrane[1], or the molecular weight of the molecule (e.g. globular protein) that is 90% retained by the membrane.[2] This definition… … Wikipedia
molecular weight — weight of a molecule … English contemporary dictionary
