DIAPASON

n. Di-as-pa'zusn. Gr., Siaircurwv. Fr., d. Ger., Stimmgabel. It., forca d'accord are. A tuning-fork. [A, 301 (a. 21).] D. normal (Fr.), D. official (Fr.). A tuning-fork which vibrates 870 times a second at a temperature of 15 C. [A, 385 (a, 21).] DIAPEDESIS (LaU. n. f. Di(di2)-a3-pe2d(pad)-e(a)'si2s. Gen., diapedes'eos (-is). Gr., 6iairijfiij<ris (from SiamiSav, to ooze through). Fr.. diapedese. Ger., Diapedese, Durchschwitzung, Durchsickern. 1. The pa age of blood-corpuscles through the walls of the ve els, in contradistinction to the emigration of leucocytes. It is a pa ive, physical filtration proce , the result of high blood-pre ure. 2. The exudation of blood through the pores of the skin. [D, 4; K.] [s. 552]