# pionium

> exotic atom consisting of one positive and one negative pion

**Wikidata**: [Q2712797](https://www.wikidata.org/wiki/Q2712797)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pionium)  
**Source**: https://4ort.xyz/entity/pionium


## References

1. Freebase Data Dumps. 2013