- a loudspeaker horn with a cross-sectional area varying as a constant raised to an exponent proportional to the distance from the vertex.
Origin of exponential horn
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a horn for the radiation of acoustic or high-frequency electromagnetic waves, of which the cross-sectional area increases exponentially with the length