substellar

S1U1B3S1T1E1L1L1A1R1

adjective

Having a mass less than the minimum necessary mass for hydrogen fusion.

“a substellar companion”

OriginEnglish stellar ← Latin sub- →
Scrabble 12
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Meanings

adjectivesubstellar (not comparable)
  1. not comparableastronomyHaving a mass less than the minimum necessary mass for hydrogen fusion.

    a substellar companion

Origin

  1. Latinsub
  2. Latinsub-
  3. Englishsub-
  4. Englishstellar
  5. Englishsubstellar

From sub- + stellar.

Full word history & related roots →
Cite this entry
APA

substellar. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/substellar

MLA

“substellar.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/substellar. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “substellar,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/substellar.

Source: substellar on Wiktionary, CC BY-SA 4.0.