D defs.my
Entry 2 senses Webster, 1913

Hyperbolic

/(hī`pẽr*bŏ"ĭk)/ · Hy·per·bol·ic · IPA /ˌhaɪ.pɚˈbɔl.ɪk/
01 a. Belonging to the hyperbola; having the nature of the hyperbola.
  1. 1.
    Belonging to the hyperbola; having the nature of the hyperbola.(Math.)
  2. 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.