Hyperbolic /(hī`pẽr*bŏ"ĭk)/

Hy·per·bol·ic

Hyperbolic

a.
  1. Belonging to the hyperbola; having the nature of the hyperbola. (Math.)
  2. Relating to, containing, or of the nature of, hyperbole; exaggerating or diminishing beyond the fact; exceeding the truth; as, an hyperbolical expression. (Rhet.)

Phrases & Compounds
Hyperbolic functions
certain functions which have relations to the hyperbola corresponding to those which sines, cosines, tangents, etc., have to the circle; and hence, called hyperbolic sines, hyperbolic cosines, etc.
Hyperbolic logarithm
See Logarithm.
Hyperbolic spiral
a spiral curve, the law of which is, that the distance from the pole to the generating point varies inversely as the angle swept over by the radius vector.