outer space

UK/ˌaʊtə ˈspeɪs/UK[ˌaʊ̯tə ˈspɛɪ̯s]US/ˌaʊtɚ ˈspeɪs/US[ˌaʊ̯ɾɚ ˈspeɪ̯s]

noun

A region outside of explored space.

“The telescope captured incredible images from outer space.”

Meanings

nounouter space (uncountable)
  1. uncountableA region outside of explored space.
  2. uncountableAny region of space beyond limits determined with reference to boundaries of a celestial system or body, especially the region of space immediately beyond Earth's atmosphere; sometimes, space beyond Earth's solar system.

    The telescope captured incredible images from outer space.

    3 more examples

    Astronauts train for years before traveling to outer space.

    Science fiction often imagines alien civilizations in the depths of outer space.

    Dans added: “We talk about outer space and trips to Mars and then when you realise Nuuk is a three-hour flight from New York City, or thereabouts, it gets interesting.”

    2025 March 8, Miranda Bryant, quoting Tom Dans, “‘It’s very unpredictable’: divided Greenland prepares to vote amid Trump-inspired existential crisis”, in The Observer, →ISSN, archived from the original on 21 Mar 2025

    Synonyms: final frontier, high frontier, last frontier

  3. uncountableA bluish shade of black.

Synonyms & antonyms

nounAny region of space beyond limits determined with reference to boundaries of a celestial system or body, especially the region of space immediately beyond Earth's atmosphere; sometimes, space beyond Earth's solar system.

More synonyms by meaning

nounany location outside the Earth's atmosphere

Similar

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Translations

Arabic فَضَاء خَارِجِيّ
  • فَضَاء خَارِجِيّ (faḍāʔ ḵārijiyy)region
Bulgarian косми́ческо простра́нство, ко́смос
  • косми́ческо простра́нство (kosmíčesko prostránstvo)region
  • ко́смос (kósmos)region
Catalan espai exterior
  • espai exteriorregion
Chinese Mandarin 太空, 宇宙空間 /宇宙空间
  • 太空 (tàikōng)region
  • 宇宙空間 /宇宙空间 (yǔzhòu kōngjiān)region
  • 外層空間 /外层空间 (wàicéng kōngjiān)region
Czech kosmický prostor
  • kosmický prostorregion
Danish ydre rum
  • ydre rumregion
Dutch ruimte
  • ruimteregion
Estonian maailmaruum
  • maailmaruumregion
Finnish ulkoavaruus
  • ulkoavaruusregion
French espace extra-atmosphérique, espace extérieur
  • espace extra-atmosphériqueregion
  • espace extérieurregion
German Weltraum, All
  • Weltraumregion
  • Allregion
  • Weltallregion
Greek διάστημα
  • διάστημα (diástima)region
Hebrew חָלָל חִיצוֹן
  • חָלָל חִיצוֹן (khalál khitsón)region
Hindi अंतरिक्ष
  • अंतरिक्ष (antrikṣ)region
Hungarian világűr
  • világűrregion
Icelandic útgeimur
  • útgeimurregion
Italian spazio cosmico, cosmo
  • spazio cosmicoregion
  • cosmoregion
  • spazio esternoregion
Japanese 宇宙, 宇宙空間
  • 宇宙 (uchū)region
  • 宇宙空間 (uchūkūkan)region
Korean 우주, 우주 공간
  • 우주 (uju)region
  • 우주 공간 (uju gonggan)region
Latvian kosmiskā telpa
  • kosmiskā telparegion
Lithuanian kosminė erdvė
  • kosminė erdvėregion
Malay angkasa lepas
  • angkasa lepasregion
Māori tuarangi
  • tuarangiregion
Norwegian Bokmål verdensrom, ytre rom
  • verdensromregion
  • ytre romregion
Polish kosmos, przestrzeń kosmiczna
  • kosmosregion
  • przestrzeń kosmicznaregion
Portuguese espaço sideral
  • espaço sideralregion
Romanian spațiu cosmic, spațiu interplanetar
  • spațiu cosmicregion
  • spațiu interplanetarregion
  • cosmosregion
Russian ко́смос, откры́тый ко́смос
  • ко́смос (kósmos)region
  • откры́тый ко́смос (otkrýtyj kósmos)region
  • косми́ческое простра́нство (kosmíčeskoje prostránstvo)region
Slovak kozmický priestor
  • kozmický priestorregion
Spanish espacio exterior, espacio cósmico
  • espacio exteriorregion
  • espacio cósmicoregion
Swahili anga za juu
  • anga za juuregion
Swedish yttre rymden
  • yttre rymdenregion
Tamil விண்வெளி
  • விண்வெளி (viṇveḷi)region
Thai อวกาศ
  • อวกาศ (à-wá-gàat)region
Turkish dış uzay
  • dış uzayregion
Ukrainian космі́чний про́стір, ко́смос
  • космі́чний про́стір (kosmíčnyj próstir)region
  • ко́смос (kósmos)region
Urdu فَضائے بَسِیط
  • فَضائے بَسِیط (fazāe basīt)region
Vietnamese vũ trụ
  • vũ trụregion
Cite this entry
APA

outer space. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/outer%20space

MLA

“outer space.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/outer%20space. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “outer space,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/outer%20space.

Source: outer space on Wiktionary, CC BY-SA 4.0.