Definify.com
Webster 1913 Edition
Hyperbolical
{
Hyˊper-bol′ic
(hīˊpẽr-bŏ′ĭk)
, Hyˊper-bol′ic-al
(hīˊpẽr-bŏ′ĭ-kal)
, } Adj.
[L.
hyperbolicus
, Gr. ὑπερβολικός
: cf. F. hyperbolique
.] 1.
(Math.)
Belonging to the hyperbola; having the nature of the hyperbola.
2.
(Rhet.)
Relating to, containing, or of the nature of, hyperbole; exaggerating or diminishing beyond the fact; exceeding the truth;
“This hyperbolical epitaph.” as, an
. hyperbolical
expressionFuller.
Hyperbolic functions
(Math.)
, 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
(Math.)
, 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.