To cause to move, especially at an angle
To change the direction or course of
Prisms deflect rays of light towards their bases.
The rain began, light at first, and he adjusted his helmet to deflect the droplets from blowing in his face.
"You need more of an angle when you deflect," he told her.
The verniers having been read, the cross-arm is rotated so as to deflect the needle a in the opposite direction, and a new setting is taken.
In the position shown in solid lines, these valves deflect the air and gas into the left-hand pair of "regenerators" or spacious heat-transferring chambers.