# opacity

> property of an object or substance that is impervious to light

**Wikidata**: [Q691914](https://www.wikidata.org/wiki/Q691914)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Opacity)  
**Source**: https://4ort.xyz/entity/opacity


## References

1. Art & Architecture Thesaurus
2. Freebase Data Dumps. 2013
3. Quora
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)