a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee"
cause or enable to pass through; "The canal will transit hundreds of ships every day"
revolve (the telescope of a surveying transit) about its horizontal transverse axis in order to reverse its direction
pass across (a sign or house of the zodiac) or pass across (the disk of a celestial body or the meridian of a place); "The comet will transit on September 11"
make a passage or journey from one place to another; "The tourists moved through the town and bought up all the souvenirs;" "Some travelers pass through the desert"