5. One of certain stops in the organ, so called because they extend through the scale of the instrument. They are of several kinds, as open diapason, stopped diapason, double diapason, and the like.
||Di`a*pe*de"sis (?), n. [NL., fr. Gr. &?; a leaping or oozing through, fr. &?; to leap through; dia` through + &?; to leap.] (Med.) The passage of the corpuscular elements of the blood from the blood vessels into the surrounding tissues, without rupture of the walls of the blood vessels.
||Di`a*pen"te (?), n. [L., fr. Gr. &?; a fifth; dia` through + &?; five: cf. F. diapente.] 1. (Anc. Mus.) The interval of the fifth.