Carpal tunnel syndrome is numbness, tingling, weakness, and other problems in your hand because of pressure on the median nerve in your wrist. The median nerve and several tendons run from your forearm to your hand through a small space in your wrist called the carpal tunnel. The median nerve controls movement and feeling in your thumb and first three fingers (not your little finger). Pressure on the median nerve causes carpal tunnel syndrome.
Astronomy. 1  Also called period of rotation. the time in which a body rotates once on its axis. 2  Also called period of revolution. the time in which a planet or satellite revolves once about its primary.
1.A synodic period can be defined as the position of objects with respect to the sun. 2.A sidereal period is defined as the position of an object with respect to the stars. 3.When a synodic month lasts 29 days, 12 hours, and 44 minutes, a sidereal month lasts 27 days, 7 hours, and 43 minutes.