In telecommunication, the term hybrid has the following meanings:
1. A functional unit in which two or more different technologies are combined to satisfy a given requirement.
Note: Examples of hybrids include (a) an electronic circuit having both vacuum tubes and transistors, (b) a mixture of thin-film and discrete integrated circuits, and (c) a computer, or electronic device that has both analog and digital capability.
2. A resistance hybrid[?].
3. A hybrid coil.
Source: from Federal Standard 1037C and from MIL-STD-188
