# vacuum

> space that is empty of matter

**Wikidata**: [Q11475](https://www.wikidata.org/wiki/Q11475)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Vacuum)  
**Source**: https://4ort.xyz/entity/vacuum


## References

1. Integrated Authority File
2. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=6090)
3. Nuovo soggettario
4. Freebase Data Dumps. 2013
5. BBC Things
6. UMLS 2023
7. National Library of Israel
8. CC 6
9. KBpedia
10. GF WordNet
11. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)