Loss

Loss may refer to:

Pure economic loss
Loss (baseball), a pitching statistic in baseball
Attenuation, a reduction in amplitude and intensity of a signal
In telecommunications, loss is a decrease in signal in a communications system:
- Angular misalignment loss, power loss caused by the deviation from optimum angular alignment
- Bridging loss, the loss that results when an impedance is connected across a transmission line
- Coupling loss, the loss that occurs when energy is transferred from one circuit, optical device, or medium to another
- Insertion loss, the decrease in transmitted signal power resulting from the insertion of a device in a transmission line or optical fiber
- Path loss, the attenuation undergone by an electromagnetic wave in transit from a transmitter to a receiver
  - Free-space path loss, the loss in signal strength that would result if all influences were sufficiently removed having no effect on its propagation
- Return loss, the ratio of the amplitude of the reflected wave to the amplitude of the incident wave
Round-trip loss in laser physics refers to energy lost due to scattering or absorption
Loss function, in statistics, a function representing the cost associated with an event

Arts

Loss (film), a 2008 film by Maris Martinsons
Joe Loss (1909–1990), founder of The Joe Loss Orchestra
Loss (Mull Historical Society album), 2001
Loss (Bass Communion album), 2006
Loss (comics), a mutant comic book character
Lord Loss (character), the Demon Lord from Darren Shan's 10 book series The Demonata
"The Loss", a 1990 fourth-season episode of Star Trek: The Next Generation