Word.ws English Dictionary

ultraluminous

ultraluminous adjective: very luminous.

Adjective

ultraluminous (not comparable)

  1. Very luminous
    1. Very luminous, though less luminous than that classified as hyperluminous.
  2. Having a luminosity near below, at, or, exceeding Eddington luminosity, exceeding the Eddington limit

Forms of ultraluminous

alternative formultra-luminous

Origin of ultraluminous

From ultra- + luminous.

Words formed from ultraluminous

Questions about ultraluminous

What does ultraluminous mean?
Ultraluminous means very luminous.
What part of speech is ultraluminous?
Ultraluminous is an adjective.

Words near ultraluminous in the dictionary

  1. ultralow-cost carrier
  2. ultraloyal
  3. ultraloyalist
  4. ultraloyalists
  5. ultralucid
  6. ultraluminous
  7. ultraluxe
  8. ultraluxurious
  9. ultraluxury
  10. ultramacho
  11. ultramafic

Source and license

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