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 Cobra MicroTalk CXR825 30-Mile Two-Way Radio is a compact, high-powered GMRS/FRS radio with a maximum transmission range of up to 30 miles. It features a built-in NOAA radio receiver for weather and emergency information. It also features VibrAlert, which notifies you of a call in noisy or all-quiet environments.