| pedal | 1. <marine biology, zoology> Of or pertaining to the foot, or to feet, literally or figuratively; specifically, pertaining to the foot of a mollusk; as, the pedal ganglion. 2. Of or pertaining to a pedal; having pedals. <geometry> Pedal curve or surface, 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. Origin: L. Pedalis, fr. Pes, pedis, foot. See Foot, and cf. Pew. 1. <mechanics> A lever or key acted on by the foot, as in the pianoforte to raise the dampers, or in the organ to open and close certain pipes; a treadle, as in a lathe or a bicycle. 2. <geometry> A pedal curve or surface. Origin: Cf. F. Pedale, It. Pedale. See Pedal. Source: Websters Dictionary (01 Mar 1998) |
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| pedal system | Efferent fibres connecting the forebrain with more caudal structures. (05 Mar 2000) |
| piezogenic pedal papule | Pressure-induced papules of the heel, occurring probably as a result of herniation of fat tissue. Pruritic urticarial papules and plaques of pregnancy (PUPPP), intensely pruritic papulovesicles that begin on the abdomen in the third trimester and spread peripherally, resolves rapidly after delivery and does not affect the foetus. Split papules, papule's at commissures of the mouth seen in some cases of secondary syphilis. (05 Mar 2000) |
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