Word
laser
Meanings
a device that produces a narrow, intense beam of light used for cutting, measuring, scanning, or pointing
a narrow, intense beam of light produced by such a device
Definition
A laser is a device that produces a narrow, powerful beam of light.
A laser is a machine that creates a very focused beam of light, often in a single color. Because the beam is narrow and intense, it can be aimed precisely over long distances. Lasers are used in many fields, including medicine, manufacturing, communications, and everyday electronics.
Examples
- The technician calibrated the laser before starting the precision cut.
- I could follow the laser as it swept across the barcode scanner window.
- She avoided looking directly at the laser, even for a moment, during the demonstration.
- They aligned the mirrors until the laser hit the sensor consistently from across the lab.
Common mistake
Learners sometimes say “do a laser” instead of “use a laser” or “shine a laser (beam)” when describing how it works.
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