Modifies a noun

• converter: Environmental concerns are addressed through the use of three-way catalytic converters with heated lambda probes.

• handshake: This is made possible by requiring a three-way handshake to start a session.

• calling: For example, your package might include features such as three-way calling, call forwarding, unlimited long distance or continuous dialing.

• tie: With two regions yet to declare, we had a three-way tie.

• catalyst: Meeting new emission standards The three-way catalyst has had an enormous impact on improving air quality.

• junction: To the left at the three-way junction is a small chamber from where a 5m climb down a rift lands on boulders.