Word.ws English Dictionary

femtometre

femtometre noun: an SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm.

Noun

femtometre (plural femtometres)

  1. An SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm
    • Holonyms: picometre < nanometre < micrometre < millimetre < centimetre < decimetre < metre < kilometre < megametre < gigametre < terametre < petametre < exametre < zettametre < yottametre < ronnametre < quettametre
    • Meronyms: yoctometre < zeptometre < attometre

Forms of femtometre

pluralfemtometres

Origin of femtometre

From femto- + metre.

Words formed from femtometre

Questions about femtometre

What does femtometre mean?
Femtometre means an SI unit of length equal to 10⁻¹⁵ metres. Symbol: fm.
What part of speech is femtometre?
Femtometre is a noun.
What is the plural of femtometre?
The plural of femtometre is femtometres.

Words near femtometre in the dictionary

  1. femtomachine
  2. femtomachines
  3. femtomagnetism
  4. femtometer
  5. femtometers
  6. femtometre
  7. femtometres
  8. femtometric
  9. femtomolar
  10. femtomole
  11. femtomoles

Source and license

Adapted from Wiktionary: femtometre (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: “femtometre.” Word.ws, https://word.ws/femtometre. Based on Wiktionary, CC BY-SA 4.0.