You searched for: “circulator
1. A person who moves from place to place.
2. A person who circulates money, information, etc.
3. A talebearer or scandalmonger.
4. Any of various devices for circulating gases or liquids.

There are circulators both for electronic signals and for light, the latter being used in optical fiber networks.

This entry is located in the following unit: circ- + (page 2)