e/Augmented seventh

Information
has gloss	eng: In music, the interval of an augmented seventh is an interval of a major seventh augmented by a chromatic semitone. It is therefore the difference between the diatonic and chromatic semitones, which makes it a highly variable quantity between one meantone tuning and the next. In standard equal temperament, in fact, it is identical to the perfect octave , because both semitones have the same size. In 19 equal temperament, on the other hand, the interval is 63 cents short of an octave, ie 1137 cents. More typical meantone tunings fall between these extremes, giving it an intermediate size.
lexicalization	eng: augmented seventh
instance of	(noun) a set containing all points (or all real numbers) between two given endpoints interval