1 a wasting away of the body, as from poor nutrition, nerve damage, or disuse. 2  to undergo atrophy; wither; degenerate:His crippled leg began to atrophy with no exercise. 3  to become weakened; decline:Industry atrophied in bad economic times.
Voice Amplifiers / Long Range Listening Devices. Listening devices can be utilized for a variety of purposes including listening through a wall, listening from a distance or enjoying your favorite animals in the wild. More complex systems contain an audio transmitter and receiver.
The Long Range Wireless Spotting Scope has a one-mile (1,760 yards) range. It includes two pieces of hardware: camera and case/receiver. The receiver is built into the case and touts a 16-hour battery life, and it includes a USB port that you can use to charge your iPad or other device.