Plural of planetarium
regular plural
The plural of planetarium is planetariums or planetaria.
Forms of planetarium
| Singular | planetarium /plænɪˈtɛəɹɪəm/ |
|---|---|
| Plural | planetariums planetaria |
| Countable | countable |
Meaning of planetarium
- noun A display museum in which images of stars and other astronomical phenomena are projected onto a domed ceiling.
- noun An orrery.
Questions about the plural of planetarium
- What is the plural of planetarium?
- The plural of planetarium is planetariums or planetaria.
- Which is correct, planetariums or planetaria?
- Both are used. planetariums is the more common of the two in English writing.
- Is planetarium countable?
- Planetarium is a countable noun.
Source and license
Adapted from Wiktionary: planetarium (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
Last updated:
Cite this page: “Plural of planetarium.” Word.ws, https://word.ws/plural/planetarium. Based on Wiktionary, CC BY-SA 4.0.