ETYM Cf. Scot. and Dutch spat, Dan. spette, Swed. spott spittle, slaver; from the root of Eng. spit. Related to Spit to eject from the mouth, and cf. Spatter.
The diameter of the area on the target where the temperature determination is made. The spot is defined by the circular aperture at the target which allows typically 90% of the ir energy from the target to be collected by the instrument. See also Size-of-Source Effect.
1. A small contrasting part of something; SYN. speckle, dapple, patch, fleck, maculation.
2. A section of an entertainment that is assigned to a specific performer or performance.
3. A short section or illustration (as between radio or tv programs or in a magazine) that is often used for advertising.
4. A playing card with a specified number of pips on it to indicate its value.
5. A place for entertainment.
6. A mark on a playing card (shape depending on the suit); SYN. pip.
7. (British) A small quantity; SYN. bit.

1. To become spotted
2. To make a spot or mark onto; SYN. stain, fleck, blob, blot.
3. To mark with a spot or spots