Breadcrumb Home > Dictionary > Index D delta function: Meaning and Definition of Find definitions for: del'ta func"tion Pronunciation: [key] — Physics, Math. Physics,Math. 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. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. delta connection delta hepatitis TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language