1694 Federal Register /Vol. 80, No. 8/Tuesday, January 13, 2015/Rules and Regulations ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 260 and 261 [EPAâHQâRCRAâ2010â0742; FRLâ9728â5â OSWER] RIN 2050âAG62 Definition of Solid Waste AGENCY: Environmental Protection Agency (EPA).
obturator. 1. a disk or plate that closes an opening. 2. a prosthesis for closing an acquired or congenital opening of the palate (cleft palate). obturator sign pain on outward pressure on the obturator foramen as a sign of inflammation in the sheath of the obturator nerve, probably caused by appendicitis.(ob'tÅ«-rÄ'tÅr),ny structure that occludes an opening. 2. Denoting the obturator foramen, the obturator membrane, or any of several parts in relation to this foramen. 3. A prosthesis used to close an opening in the hard palate, usually in a cleft palate.
actuator. A mechanical, electrical, or hydraulic device, or their combination, used to effect some predetermined linear, rotary, or oscillating movement. An actuator essentially converts hydraulic or air pressure into mechanical force. Basically, there are two types of actuators: single-acting and double-acting. In the single-acting actuator, the piston moves in a single direction as a result of system pressure. In a double-acting system, the actuator's piston moves in either direction.