Discrete

adjective

1. Separate; distinct; individual; non-continuous.

   "a government with three discrete divisions"

2. That can be perceived individually and not as connected to, or part of something else.
3. Having separate electronic components, such as individual diodes, transistors and resisters, as opposed to integrated circuitry.
4. (audio engineering) Having separate and independent channels of audio, as opposed to multiplexed stereo or quadraphonic, or other multi-channel sound.
5. Having each singleton subset open: said of a topological space or a topology.