Circuit
A circuit is the temporary path through several Tor relays that a client builds for connections. Typically three hops: Guard, Middle, Exit. Multiple streams can share the same circuit.
A circuit is not a permanent line, but an agreed route. The client picks relays by rules (bandwidth, family, role) and negotiates keys. See Onion Routing.
Category: Network
This page is a short glossary definition, not a full encyclopedia article. See the Tor glossary A–Z for the rest of the set.