Word.ws English Dictionary

proper motions

proper motions is the plural of proper motion.

Meaning of proper motion

Noun

proper motion (plural proper motions)

  1. The change in apparent position of a celestial body due to that body's velocity relative to the Sun.

Questions about proper motions

What is proper motions the plural of?
Proper motions is the plural of proper motion.

Words near proper motions in the dictionary

  1. proper inclusion
  2. proper job
  3. proper jobs
  4. proper left
  5. proper motion
  6. proper motions
  7. proper name
  8. proper names
  9. Proper Nangalisan
  10. proper noun
  11. proper nounhood

Source and license

Adapted from Wiktionary: proper motions (page history and authors); proper motion (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.

Last updated:

Cite this entry: “proper motions.” Word.ws, https://word.ws/proper_motions. Based on Wiktionary, CC BY-SA 4.0.