From Glossary of Meteorology


  1. The degree to which nearly equal values of a quantity can be discriminated.

  2. The smallest measurable change in a quantity.

  3. The least value of a measured quantity that can be distinguished.

  4. A formal inference rule permitting computer programs to reason logically.

  5. The ability of an optical system to render visible separate parts of an object or to distinguish between different sources of light.