An abutment.
The butting or boundary of land, particularly at the end; buttals.
The act of abutting.
To describe a piece of land in terms of its abuttals.
Apophony.
A calibration marking.
A passing by small degrees from one tone or shade, as of color, to another.
A diatonic succession of chords.
A gradual change within one parameter, or an overlapping of two blocks of sound.
A sequence of gradual, successive stages; a systematic progression.
Any degree or relative position in an order or series.
The act of gradating or arranging in grades.
To form with gradations.