Word.ws English Dictionary

spiral arm

spiral arm noun: a section of a spiral galaxy that coils out from the centre.

Noun

spiral arm (plural spiral arms)

  1. A section of a spiral galaxy that coils out from the centre.
    • Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun.1979, Douglas Adams, The Hitchhiker's Guide to the Galaxy
    • Primary mass relays can propel ships thousands of light years, often from one spiral arm of the galaxy to another.2008, BioWare, Mass Effect, Redwood City: Electronic Arts, →ISBN, →OCLC, PC, scene: Mass Relays Codex entry
    Synonyms:
    galactic arm

Synonyms of spiral arm

Forms of spiral arm

pluralspiral arms

Questions about spiral arm

What does spiral arm mean?
Spiral arm means a section of a spiral galaxy that coils out from the centre.
What part of speech is spiral arm?
Spiral arm is a noun.
What is the plural of spiral arm?
The plural of spiral arm is spiral arms.

Words near spiral arm in the dictionary

  1. spiradoline
  2. spiraea
  3. spiraeas
  4. spiraeic acid
  5. spiral
  6. spiral arm
  7. spiral arms
  8. spiral dance
  9. spiral dances
  10. spiral DRAGN
  11. spiral DRAGNs

Source and license

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