Word.ws English Dictionary

femtoradian

femtoradian noun: one quadrillionth (10⁻¹⁵) of a radian.

Noun

femtoradian (plural femtoradians)

  1. One quadrillionth (10⁻¹⁵) of a radian.
    • Of particular interest, we measured the angular deflection of a mirror down to 560 femtoradians and showed the signal to noise ratio to be amplified by a factor of 150.2024, P. Benjamin Dixon, David J. Starling, Nathan S. Williams, Praveen Vudyasetu, Andrew N. Jordan, John C. Howell, “Deflection Measurements with Weak Values”, in Frontiers in Optics 2010/Laser...

Forms of femtoradian

pluralfemtoradians

Origin of femtoradian

From femto- + radian.

Questions about femtoradian

What does femtoradian mean?
Femtoradian means one quadrillionth (10⁻¹⁵) of a radian.
What part of speech is femtoradian?
Femtoradian is a noun.
What is the plural of femtoradian?
The plural of femtoradian is femtoradians.

Words near femtoradian in the dictionary

  1. femtophotography
  2. femtopipette
  3. femtopipettes
  4. femtoplankton
  5. femtoplanktons
  6. femtoradian
  7. femtoradians
  8. femtosatellite
  9. femtosatellites
  10. femtoscale
  11. femtoscopic

Source and license

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