noun
1.A device that deflects something.
‘Why is it that in France I am obliged to fit beam deflectors to avoid dazzling oncoming traffic with my right-hand - drive dipped beams, but I have yet to see a left-hand-drive car arrive in England fitted with beam deflectors?’
‘Less than half had fitted deflectors on their headlamps, as required, to stop them dazzling oncoming drivers when driving on the right at night.’
2.A plate or other attachment for deflecting a flow of air, water, heat, etc.
‘an underbody deflector to smooth airflow near the rear suspension’
‘a metal deflector plate to stop the controls getting too hot’
3.An electrode in a cathode ray tube whose magnetic field is used to deflect a beam of electrons on to a phosphor screen to form an image.
‘The physical dimensions and spacing of the electrodes are selected to compensate static distortion while the x and y deflectors compensate distortion.’
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