Origin of the term "planing"
Does anyone out there know the origin of the term "planing" in music? I first came across the technique in my undergraduate jazz studies, but later learned that scholars also use the term to describe Western art music. When you stop and think about it, "planing" is a strange term—curiously accurate if we think of notes as points, and ongoing melodic voices or vertical 'stacks' of notes as lines (horizontal and vertical, respectively), and moving stacks of notes as two-dimensional planes.
Any help would be appreciated!