damp·ing 
(dămpĭng)
(dămpĭng)n.
The gradual reduction of excessive oscillation, vibration, or signal intensity, and therefore of instability in a mechanical or electrical device, by a substance or some aspect of the device.
- threepence
- threepenny
- three-piece
- three-ply
- three-point landing
- three-point line
- three-quarter
- three-quarter binding
- three-ring circus
- three R's
- threescore
- three sheets in the wind
- three sheets to/in the wind
- three sheets to the wind
- Three Sisters
- threesome
- three-square
- three squares a day
- three-toed sloth
- three way
- three-way
- three-wheeler
- thremmatology
- threnodial
- threnodic