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.
One of the twelve periods into which an year is divided, each having 28 or 29 to 31 days. 2. In commerce, a period of 30 successive days. 3. Unit of time based on the revolution of the Moon around the Earth and defined as the period between two successive new moons or, on average, 29.53 days. Also called synodic month.