Molecular attraction
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 attraction} (Phys.), attraction acting between the molecules of bodies, and at insensible distances.

{Molecular weight} (Chem.), the weight of a molecule of any gas or vapor as compared with the hydrogen atom having weight of 1 as a standard; the sum of the atomic weights of the constituents of a molecule; thus, the molecular weight of water ({H2O}) is 18. For more precise measurements, the weight of the carbon isotope carbon-12 is used as the standard, that isotope having the value of 12.000. In this systen, now used almost universally, the hydrogen atom has a weight of 1.0079. [1913 Webster +PJC]


The Collaborative International Dictionary of English. 2000.

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  • Molecular attraction — occurs when neutrally charged molecules nevertheless experience the uneven distribution of electrons over their structure due to London Forces induced by random variations of electron density occurring in non polar compounds, hydrogen bonding due …   Wikipedia

  • molecular attraction — molekulinė trauka statusas T sritis fizika atitikmenys: angl. molecular attraction vok. Molekülanziehung, f; Molekularanziehung, f; Molekularattraktion, f rus. молекулярное притяжение, n pranc. attraction moléculaire, f …   Fizikos terminų žodynas

  • molecular attraction — molekulinė trauka statusas T sritis chemija apibrėžtis Jėga, traukianti molekules vieną prie kitos. atitikmenys: angl. molecular attraction rus. молекулярное притяжение …   Chemijos terminų aiškinamasis žodynas

  • 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 attraction} (Phys.) …   The Collaborative International Dictionary of English

  • 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

  • attraction moléculaire — molekulinė trauka statusas T sritis fizika atitikmenys: angl. molecular attraction vok. Molekülanziehung, f; Molekularanziehung, f; Molekularattraktion, f rus. молекулярное притяжение, n pranc. attraction moléculaire, f …   Fizikos terminų žodynas

  • Molecular phylogenetics — (pronounced /məˈlɛkjʊlər faɪlɵdʒɪˈnɛtɪks/) is the analysis of hereditary molecular differences, mainly in DNA sequences, to gain information on an organism s evolutionary relationships. The result of a molecular phylogenetic analysis is… …   Wikipedia

  • Attraction Des Longues Branches — Pour les articles homonymes, voir LBA et Long Branch. L attraction des longues branches (ou LBA, pour Long Branch Attraction en anglais) est un artefact de reconstruction en phylogénie moléculaire qui provoque le regroupement des taxons qui… …   Wikipédia en Français

  • Molecular modification — is chemical alteration of a known and previously characterized lead compound for the purpose of enhancing its usefulness as a drug. This could mean enhancing its specificity for a particular body target site, increasing its potency, improving its …   Wikipedia

  • Molecular orbital — See also: Molecular orbital theory In chemistry, a molecular orbital (or MO) is a mathematical function describing the wave like behavior of an electron in a molecule. This function can be used to calculate chemical and physical properties such… …   Wikipedia

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