# ultrasound

> sound waves with frequencies above the human hearing range

**Wikidata**: [Q162564](https://www.wikidata.org/wiki/Q162564)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ultrasound)  
**Source**: https://4ort.xyz/entity/ultrasound


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=7912)
2. [Source](https://meshb.nlm.nih.gov/record/ui?ui=D000069453)
3. Nuovo soggettario
4. Freebase Data Dumps. 2013
5. Integrated Authority File
6. BBC Things
7. YSO-Wikidata mapping project
8. Quora
9. [Source](https://golden.com/wiki/Ultrasound-BW9ZE)
10. National Library of Israel
11. KBpedia
12. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)