noun · 5 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/plænɪˈtɛəɹɪəm/
Received-Pronunciation:/plænɪˈtɛːɹi.əm/
/plænɪˈtɛɚiəm/without the Mary–marry–merry merger
/plænəˈtɛɚiəm/without the Mary–marry–merry merger
Boston:/pleənɪˈteə.ɹiəm/
Recorded audio is listed in the source snapshot.
/plænɪˈtɛɹiəm/Mary–marry–merry merger
/plænəˈtɛɹiəm/Mary–marry–merry merger
Southern-England:Recorded audio is listed in the source snapshot.
CMU ARPABET:P L AE2 N AH0 T EH1 R IY0 AH0 M
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A display museum in which images of stars and other astronomical phenomena are projected onto a domed ceiling.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: Spacearium
Antonyms: none provided
2
noun
Meaning 2
An orrery.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
an apparatus or model for representing the solar systems
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: model, simulation
Narrower terms: orrery
4
noun
Meaning 4
an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: optical device
5
noun
Meaning 5
a building housing an instrument for projecting the positions of the planets onto a domed ceiling
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: building, edifice
History
Etymology
Borrowed from New Latin planētārium. Equivalent to planet + -arium.
Across languages
Translations
60 source translations are retained for this English entry.
Albanian:
planetar
— museum which displays images of space
Armenian:
պլանետարիում
(planetarium)
— museum which displays images of space
Asturian:
planetariu
— museum which displays images of space
Basque:
planetario
— museum which displays images of space
Belarusian:
планета́рый
(planjetáryj)
— museum which displays images of space
Belarusian:
плянэта́рый
(pljanetáryj)
— museum which displays images of space
Bulgarian:
планета́риум
(planetárium)
— museum which displays images of space
Burmese:
နက္ခတ်တာရာပြခန်း
(nakhkattara-pra.hkan:)
— museum which displays images of space
Catalan:
planetari
— museum which displays images of space
Chinese Cantonese:
天象儀 /天象仪
(tin1 zoeng6 ji4)
— museum which displays images of space
Chinese Mandarin:
天象儀 /天象仪
(tiānxiàngyí)
— museum which displays images of space
Chinese Mandarin:
天文館 /天文馆
(tiānwénguǎn)
— museum which displays images of space
Czech:
planetárium
— museum which displays images of space
Danish:
planetarium
— museum which displays images of space
Dutch:
planetarium
— museum which displays images of space
Esperanto:
planetario
— museum which displays images of space
Estonian:
planetaarium
— museum which displays images of space
Finnish:
planetaario
— museum which displays images of space
French:
planétarium
— museum which displays images of space
Friulian:
planetari
— museum which displays images of space
Galician:
planetario
— museum which displays images of space
Georgian:
პლანეტარიუმი
(ṗlaneṭariumi)
— museum which displays images of space
German:
Planetarium
— museum which displays images of space
Greek:
πλανητάριο
(planitário)
— museum which displays images of space
Hindi:
ताराघर
(tārāghar)
— museum which displays images of space
Hindi:
नक्षत्रशाला
(nakṣatraśālā)
— museum which displays images of space
Hungarian:
planetárium
— museum which displays images of space
Icelandic:
stjörnuver
— museum which displays images of space
Ido:
planetaro
— museum which displays images of space
Indonesian:
planetarium
— museum which displays images of space
Irish:
pláinéadlann
— museum which displays images of space
Italian:
planetario
— museum which displays images of space
Japanese:
プラネタリウム
(puranetariumu)
— museum which displays images of space
Japanese:
天象儀
(tenshōgi)
— museum which displays images of space
Korean:
천문관
(cheonmun'gwan)
— museum which displays images of space
Korean:
플라네타륨
(peullanetaryum)
— museum which displays images of space
Latvian:
planetārijs
— museum which displays images of space
Lithuanian:
planetariumas
— museum which displays images of space
Macedonian:
планетариум
(planetarium)
— museum which displays images of space
Malay:
planetarium
— museum which displays images of space
Malay:
balai cerap
— museum which displays images of space
Māori:
whare rangihori
— museum which displays images of space
Norwegian Bokmål:
planetarium
— museum which displays images of space
Norwegian Nynorsk:
planetarium
— museum which displays images of space
Polish:
planetarium
— museum which displays images of space
Portuguese:
planetário
— museum which displays images of space
Romanian:
planetariu
— museum which displays images of space
Russian:
планета́рий
(planetárij)
— museum which displays images of space
Serbo-Croatian:
планѐта̄риј
— museum which displays images of space
Serbo-Croatian:
планетаријум
— museum which displays images of space
Serbo-Croatian:
planètārij
— museum which displays images of space
Serbo-Croatian:
planetarijum
— museum which displays images of space
Slovak:
planetárium
— museum which displays images of space
Spanish:
planetario
— museum which displays images of space
Swedish:
planetarium
— museum which displays images of space
Thai:
ท้องฟ้าจําลอง
(tɔ́ɔng-fáa-jam-lɔɔng)
— museum which displays images of space
Turkish:
planetaryum
— museum which displays images of space
Ukrainian:
планета́рій
(planetárij)
— museum which displays images of space
Uzbek:
planetariy
— museum which displays images of space
Vietnamese:
cung thiên văn
— museum which displays images of space