Meanings
plural interstellar planets
- astronomya planetary-mass object which has either been ejected from its system or was never gravitationally bound to any star or other such object, and that therefore orbits the galaxy directly.
Synonyms: free-floating planet, nomad planet, orphan planet, rogue planet
Synonyms & antonyms
nouna planetary-mass object which has either been ejected from its system or was never gravitationally bound to any star or other such object, and that therefore orbits the galaxy directly.
Origin
- Proto-Indo-European*pel-“to wander, roam”
- Ancient Greekπλανήτης
- Latinplaneta
- Old Englishplanēta“planet, chasuble”
- Middle Englishplanete
- Englishinterstellar planet
Constructed from Latin: inter- + stellar + planet. The latter derives from Middle English planete, from Old English planēta (“planet, chasuble”), from Latin planeta, planetes, from Ancient Greek πλανήτης (planḗtēs) variant of πλάνης (plánēs, “wanderer, planet”), from πλανάω (planáō, “wander about, stray”), of unknown origin. Perhaps from a Proto-Indo-European *pel- (“to wander, roam”), cognate with Latin pālor (“wander about, stray”), Old Norse flana (“to rush about”), Norwegian flanta (“to wander about”). More at flaunt.
More words from Middle English, Old English, Latin
Full word history & related roots →Cite this entry
interstellar planet. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/interstellar%20planet
“interstellar planet.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/interstellar%20planet. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “interstellar planet,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/interstellar%20planet.
Source: interstellar planet on Wiktionary, CC BY-SA 4.0.