Noun
TRACON (plural TRACONs)
(aviation) Acronym of terminal radar approach control.
tracon (plural tracons)
Alternative spelling of TRACON
In most countries, this is referred to as Terminal Control; in the U.S., it is referred to as a TRACON (Terminal Radar Approach Control). Source: Internet
They may also use TRACON radar data to control when it provides a better "picture" of the traffic or when it can fill in a portion of the area not covered by the long range radar. Source: Internet