# diminished fourth

> musical interval produced by narrowing a perfect fourth by a chromatic semitone (e.g. from C♯ to F or from C to F♭); enharmonically equivalent to a major third

**Wikidata**: [Q5277371](https://www.wikidata.org/wiki/Q5277371)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Diminished_fourth)  
**Source**: https://4ort.xyz/entity/diminished-fourth