exponential horn

exponential horn

noun
a loudspeaker horn with a cross-sectional area varying as a constant raised to an exponent proportional to the distance from the vertex.

Origin:
1925–30
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Exponential horn is always a great word to know.
So is callithumpian. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
exponential horn
 
n
a horn for the radiation of acoustic or high-frequency electromagnetic waves, of which the cross-sectional area increases exponentially with the length

Collins English Dictionary - Complete & Unabridged 10th Edition
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