In classical music from Western culture, an augmented third ( Play ) is an interval of fivesemitones. It may be produced by widening a major third by a chromatic semitone.^[1][3] For instance, the interval from C to E is a major third, four semitones wide, and both the intervals from C♭ to E, and from C to E♯ are augmented thirds, spanning five semitones. Being augmented, it is considered a dissonant interval.
https://en.m.wikipedia.org/wiki/Augmented_third