Word.ws English Dictionary

f-numbers

f-numbers is the plural of f-number.

Meaning of f-number

Noun

f-number (plural f-numbers)

  1. The ratio of the focal length of a lens to its diameter; a measure of the light-gathering ability of the lens.
    Synonyms:
    f-value

Questions about f-numbers

What is f-numbers the plural of?
F-numbers is the plural of f-number.

Words near f-numbers in the dictionary

  1. f-hole
  2. f-holes
  3. F-layer
  4. F-M
  5. f-number
  6. f-numbers
  7. f-off
  8. F-region
  9. F-scale
  10. F-shaped
  11. f-sharp

Source and license

Adapted from Wiktionary: f-numbers (page history and authors); f-number (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: “f-numbers.” Word.ws, https://word.ws/f-numbers. Based on Wiktionary, CC BY-SA 4.0.