D defs.my
Entry 3 senses Webster, 1913

Logarithmic

/lägˌ-ẽr-ĭth'-mĭk/ · Log·a·rith·mic · IPA /ˌlɒɡəˈɹɪðmɪk/
01 a. Of or pertaining to logarithms; consisting of logarithms.
  1. 1.
    Of or pertaining to logarithms; consisting of logarithms.
  2. 2.
    Using logarithms; as, logarithmic graph paper; a logarithmic scale.
  3. 3.
    Having a logarithm in one or more of the unknowns; -- of an equation.
Phrases & compounds
Logarithmic curve — a curve which, referred to a system of rectangular coordinate axes, is such that the ordinate of any point will be the logarithm of its abscissa.
Logarithmic spiral — a spiral curve such that radii drawn from its pole or eye at equal angles with each other are in continual proportion. See Spiral.