a (non-gloss definition|Indicates that the specified function is a hyperbolic function rather than a (soplink|trigonometric|function).)
a (geometry|topology|of an automorphism) Whose domain has two (possibly ideal) fixed points joined by a line mapped to itself by translation.
a (topology) Of, pertaining to(,) or in a hyperbolic space (gloss|a space having negative curvature or sectional curvature).