The mathematical abbreviation for hyperbolic cosecant, the reciprocal of the hyperbolic sine function used in advanced mathematics and physics.
From 'cosecant' (itself from 'co-' meaning complement, and 'secant') with the 'h' added to denote the hyperbolic version of the trigonometric function.
Hyperbolic functions are the trigonometry of curves that appear everywhere in nature—from the shape of hanging cables to the geometry of spacetime in Einstein's relativity—and 'csch' is the shorthand physicists use when math gets seriously curved.
Complete word intelligence in one call. Free tier — 50 lookups/day.