# Prandtl–Glauert singularity

> the point at which a sudden drop in air pressure occurs

**Wikidata**: [Q1424492](https://www.wikidata.org/wiki/Q1424492)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Prandtl–Glauert_singularity)  
**Source**: https://4ort.xyz/entity/prandtl-glauert-singularity


## References

1. Freebase Data Dumps. 2013