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  1. radar

    • IPA[ˈrāˌdär]

    美式

    • n.
      a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source.;an apparatus used for radar.
    • noun: radar, plural noun: radars

    • 釋義

    名詞

    • 1. a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source.
    • an apparatus used for radar.
    • used to indicate that someone or something has or has not come to the attention of a person or group the band has been kind of off the radar these past few years