non-polaradj.
/nɒnˈpəʊlə/, U.S. /nɑnˈpoʊlər/ Not polar; (Chemistry and Physics) having no electric dipole moment; composed of molecules that have no electric dipole moment.
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the world > matter > chemistry > chemical bonding > [adjective] > of or relating to polar bonding > of or relating to non-polar bonding
non-polar1847
1847 Philos. Trans. (Royal Soc.) 137 21 The hitherto mysterious phenomena of the non-polar decomposition of water by electrical discharges.
1892 Electrician 29 Jan. 329/1 He [sc. G. Forbes] had carried out some encouraging experiments with a dynamo..built on his ‘non-polar’ principle.
1913 Jrnl. Amer. Chem. Soc. 35 1443 There are two distinct types of union between atoms: polar, in which an electron has passed from one atom to the other, and non-polar, in which there is no motion of an electron.
1951 New Biol. 10 124 Water molecules, being polar.., are attracted by other polar molecules or parts of molecules but have no affinity for non-polar groups.
1974 V. B. Mountcastle et al. Med. Physiol. (ed. 13) I. i. 8/2 The nonpolar lipid regions were associated together in the interior of what was thus at least a bimolecular lipid leaflet.
1993 Canad. Geographic Jan. 34/3 They are among 350 glaciers that feed the Tatshenshini basin, part of the largest non-polar ice cap on the planet.
This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).
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adj.1847- blue-skies
- blue-sky
- blue-sky research
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- blue-spotted
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