Word.ws English Dictionary

preimages

preimages is the plural of preimage.

Meaning of preimage

Noun

preimage (plural preimages)

  1. For a given function, the set of all elements of the domain that are mapped into a given subset of the codomain; (formally) given a function ƒ : X → Y and a subset B ⊆ Y, the set ƒ⁻¹(B) = {x ∈ X : ƒ(x) ∈ B}.
    • The preimage of #92;#123;4,9#92;#125; under the function f#58;#92;R#92;rightarrow#92;R#58;f(x)#61;x² is the set #92;#123;-3,-2,#43;2,#43;3#92;#125;.
    Synonyms:
    inverse image

Questions about preimages

What is preimages the plural of?
Preimages is the plural of preimage.

Words near preimages in the dictionary

  1. preilluminating
  2. preillumination
  3. preimage
  4. preimage attack
  5. preimage attacks
  6. preimages
  7. preimaginal
  8. preimagine
  9. preimagined
  10. preimagines
  11. preimagining

Source and license

Adapted from Wiktionary: preimages (page history and authors); preimage (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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Cite this entry: “preimages.” Word.ws, https://word.ws/preimages. Based on Wiktionary, CC BY-SA 4.0.