interplanetary

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UK/ɪntəˈplænɪtəri//ɪntəˈplænɪtri/US/ɪntɚˈplænɪˌtɛəri/US/ɪntɚˈplænəˌtɛri/

adjective

Existing or occurring between planets.

“Humans are just beginning to explore interplanetary travel.”

Meanings

adjectiveinterplanetary (not comparable)
  1. not comparableExisting or occurring between planets.

    Humans are just beginning to explore interplanetary travel.

    4 more examples

    "Come, Diana [a dog]," said he; "come, my girl! thou whose destiny will be marked in the cynegetic annals; […] thou who art rushing into interplanetary space, and wilt perhaps be the Eve of all Selenite dogs! come, Diana, come here."

    1873, Jules Verne, “Round the Moon: A Sequel to From the Earth to the Moon. Chapter III. Their Place of Shelter.”, in Louis Mercier [i.e., Lewis Page Mercier], Eleanor E[lizabeth] King, transl., From the Earth to the Moon, Direct in Ninety-seven Hours and Twenty Minutes: And a Trip Round It. […], New York, N.Y.: Scribner, Armstrong & Company, published 1874, →OCLC, page 170

    Him and me, we kind of got to toasting each others good health. Just for cordial interplanetary relations you understand.

    1956, Cyril Hume, Forbidden Planet, spoken by Cook

    Calling occupants of interplanetary craft / Calling occupants of interplanetary / Most extraordinary craft / We've been observing your Earth / And one night we'll make a contact with you

    1976, “Calling Occupants of Interplanetary Craft”, in 3:47 EST, performed by Klaatu

    This is the return of the space cowboy / Interplanetary good vibe zone

    1994, “Space Cowboy”, in The Return of the Space Cowboy, performed by Jamiroquai

Synonyms & antonyms

Origin

  1. Proto-Indo-European*h₁én
  2. Proto-Indo-European*h₁n̥tér
  3. Proto-Italic*n̥ter
  4. Latininter
  5. Latininter-
  6. Englishinter-
  7. Englishplanet
  8. Englishplanetary
  9. Englishinterplanetary

From inter- + planetary.

Full word history & related roots →

Translations

Catalan interplanetari
  • interplanetariexisting or occurring between planets
Chinese Mandarin 行星際 /行星际
  • 行星際 /行星际 (xíngxīngjì)existing or occurring between planets
Czech meziplanetární
  • meziplanetárníexisting or occurring between planets
Danish interplanetarisk
  • interplanetariskexisting or occurring between planets
Dutch interplanetair
  • interplanetairexisting or occurring between planets
Esperanto interplaneda
  • interplanedaexisting or occurring between planets
Finnish planeettainvälinen, planeettojenvälinen
  • planeettainvälinenexisting or occurring between planets
  • planeettojenvälinenexisting or occurring between planets
  • interplanetaarinenexisting or occurring between planets
French interplanétaire
  • interplanétaireexisting or occurring between planets
German interplanetarisch, interplanetar
  • interplanetarischexisting or occurring between planets
  • interplanetarexisting or occurring between planets
Greek διαπλανητικός
  • διαπλανητικός (diaplanitikós)existing or occurring between planets
Hindi अंतरग्रहीय
  • अंतरग्रहीय (antragrahīya)existing or occurring between planets
Italian interplanetario
  • interplanetarioexisting or occurring between planets
Japanese 惑星間の
  • 惑星間の (wakuseikan no)existing or occurring between planets
Latvian starpplanētu
  • starpplanētuexisting or occurring between planets
Polish międzyplanetarny
  • międzyplanetarnyexisting or occurring between planets
Portuguese interplanetário
  • interplanetárioexisting or occurring between planets
Romanian interplanetar
  • interplanetarexisting or occurring between planets
Russian межплане́тный, междуплане́тный
  • межплане́тный (mežplanétnyj)existing or occurring between planets
  • междуплане́тный (mežduplanétnyj)existing or occurring between planets
Slovak medziplanetárny
  • medziplanetárnyexisting or occurring between planets
Spanish interplanetario
  • interplanetarioexisting or occurring between planets
Swedish interplanetarisk
  • interplanetariskexisting or occurring between planets
Tagalog pangkabuntalaan, kabuntalaanin
  • pangkabuntalaanexisting or occurring between planets
  • kabuntalaaninexisting or occurring between planets
Cite this entry
APA

interplanetary. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/interplanetary

MLA

“interplanetary.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/interplanetary. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “interplanetary,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/interplanetary.

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