Word.ws English Dictionary

Dirac delta

Dirac delta noun: a function-like symbol denoted as δ, with the property ∫f(t)δ(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.

Noun

Dirac delta (plural Dirac deltas)

  1. A function-like symbol denoted as δ, with the property ∫f(t)δ(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.

Forms of Dirac delta

pluralDirac deltas

Origin of Dirac delta

Named after English theoretical physicist Paul Dirac (1902–1984); the notation was chosen because the symbol behaves analogously to the Kronecker delta.

Questions about Dirac delta

What does Dirac delta mean?
Dirac delta means a function-like symbol denoted as δ, with the property ∫f(t)δ(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.
What part of speech is Dirac delta?
Dirac delta is a noun.
What is the plural of Dirac delta?
The plural of Dirac delta is Dirac deltas.

Words near Dirac delta in the dictionary

  1. Dirac comb
  2. Dirac combs
  3. Dirac cone
  4. Dirac cones
  5. Dirac constant
  6. Dirac delta
  7. Dirac delta function
  8. Dirac delta functions
  9. Dirac deltas
  10. Dirac equation
  11. Dirac equations

Source and license

Adapted from Wiktionary: Dirac delta (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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