Definition of light up
- All of the lights on the display suddenly lit up.
- His eyes/face lit up when she walked in the room.
- When the DJ announced a contest, the phones lit up.
- I can't wait to light up after work.
: something that makes vision possible
: the sensation aroused by stimulation of the visual receptors
: electromagnetic radiation of any wavelength that travels in a vacuum with a speed of 299,792,458 meters (about 186,000 miles) per second
: having light : bright
: not dark, intense, or swarthy in color or coloring : pale
: medium in saturation and high in lightness
: to become light : brighten
: to take fire
: to ignite something (such as a cigarette)
: having little weight : not heavy
: designed to carry a comparatively small load
: having relatively little weight in proportion to bulk
: with little baggage
: settle, alight
: to fall unexpectedly
: in or into a higher position or level
: from beneath the ground or water to the surface
: from below the horizon
: risen above the horizon
: being out of bed
used as a function word to indicate motion to or toward or situation at a higher point of
: up into or in the
: in a direction regarded as being toward or near the upper end or part of
: one in a high or advantageous position
: an upward slope
: a period or state of prosperity or success
: to rise from a lying or sitting position
: to move upward : ascend
used with and and another verb to indicate that the action of the following verb was either surprisingly or abruptly initiated
What made you want to look up light up? Please tell us where you read or heard it (including the quote, if possible).