Medicine. 1  hs, medical abbreviation for hours of sleep. 2  h.s., medical abbreviation for the Latin phrase hora somni (at bedtime) 3  Hereditary spherocytosis, a genetic disorder marked by hemolytic anemia.  Hidradenitis suppurativa, a skin condition affecting apocrine sweat glands and hair follicles.
Anti-Defamation League. For other uses, see Anti-Defamation League (disambiguation). The Anti-Defamation League (ADL; formerly known as the Anti-Defamation League of B'nai B'rith) is an international Jewish non-governmental organization based in the United States.
STL is the standard file type used by most additive manufacturing systems. STL is a triangulated representation of a 3D CAD model (Figure 1). The triangulation of a surface will cause faceting of the 3D model. The parameters used for outputting a STL will affect how much faceting occurs (Figures 2 and 3).