Found 1 items, similar to Pedal surface.
English → English (gcide) Definition: Pedal surface Pedal \Pe"dal\, a. [L. pedalis, fr. pes, pedis, foot. See Foot, and cf. Pew.] 1. Of or pertaining to the foot, or to feet, literally or figuratively; specifically (Zo["o]l.), pertaining to the foot of a mollusk; as, the pedal ganglion. [1913 Webster] 2. Of or pertaining to a pedal; having pedals. [1913 Webster] Pedal curve or Pedal surface (Geom.), the curve or surface which is the locus of the feet of perpendiculars let fall from a fixed point upon the straight lines tangent to a given curve, or upon the planes tangent to a given surface. Pedal note (Mus.), the note which is held or sustained through an organ point. See Organ point, under Organ. Pedal organ (Mus.), an organ which has pedals or a range of keys moved by the feet; that portion of a full organ which is played with the feet. [1913 Webster]