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IUPAC - isotropic (I03353)

isotropic

https://doi.org/10.1351/goldbook.I03353
A quantity which is independent of direction. Anisotropic and nonisotropic refer to quantities which are direction dependent.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2198 [Terms] [Paper]