lm
/ɛl ɛm/
noun
- A unit of measurement for light, equal to the amount of light emitted by one candle; short for lumen.
- This light bulb produces 800 lm of brightness.
- The flashlight has a rating of 300 lm.
- For a reading lamp, you need at least 450 lm.
- An abbreviation for 'lumen' used in technical contexts.
- Check the lm output before buying a projector.
- The lm value tells you how bright the light will be.
- The package says '800 lm' on the label.