Logarithmic \Log`a*rith"mic\, Logarithmical \Log`a*rith"mic*al\, a. [Cf. F. logarithmique.]

1. Of or pertaining to logarithms; consisting of logarithms. [1913 Webster]

2. Using logarithms; as, logarithmic graph paper; a logarithmic scale. [PJC]

3. Having a logarithm in one or more of the unknowns; -- of an equation. [PJC]

Logarithmic curve (Math.), 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. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

39 Moby Thesaurus words for "logarithmic": algorismic, algorithmic, aliquot, cardinal, decimal, differential, digital, even, exponential, figural, figurate, figurative, finite, fractional, imaginary, impair, impossible, infinite, integral, irrational, logometric, negative, numeral, numerary, numerative, numeric, odd, ordinal, pair, positive, possible, prime, radical, rational, real, reciprocal, submultiple, surd, transcendental

Source: Moby Thesaurus II by Grady Ward, 1.0
 

logarithmic adj : of or relating to or using logarithms; "logarithmic function"

Source: WordNet (r) 2.0
 

Logarithmic \Log`a*rith"mic\, Logarithmical \Log`a*rith"mic*al\, a. [Cf. F. logarithmique.]

Of or pertaining to logarithms; consisting of logarithms.

Logarithmic curve (Math.), a curve which, referred to a system of rectangular co["o]rdinate 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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Tangent \Tan"gent\, n. [L. tangens, -entis, p. pr. of tangere to touch; akin to Gr. ? having seized: cf. F. tangente. Cf. Attain, Contaminate, Contingent, Entire, Tact, Taste, Tax, v. t.]

(Geom.) A tangent line curve, or surface; specifically, that portion of the straight line tangent to a curve that is between the point of tangency and a given line, the given line being, for example, the axis of abscissas, or a radius of a circle produced. See Trigonometrical function, under Function.

Artificial, or Logarithmic, tangent, the logarithm of the natural tangent of an arc.

Natural tangent, a decimal expressing the length of the tangent of an arc, the radius being reckoned unity.

Tangent galvanometer (Elec.), a form of galvanometer having a circular coil and a short needle, in which the tangent of the angle of deflection of the needle is proportional to the strength of the current.

Tangent of an angle, the natural tangent of the arc subtending or measuring the angle.

Tangent of an arc, a right line, as ta, touching the arc of a circle at one extremity a, and terminated by a line ct, passing from the center through the other extremity o.

Source: Webster's Revised Unabridged Dictionary (1913)