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delta function

American  

noun

Physics, Mathematics.

  1. a generalized function having the value 0 except at 0, the value infinity at 0, and an integral from minus infinity to plus infinity of 1, used in thermodynamics and quantum mechanics.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.