LIGHTNING
lightning
(noun) the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more
lightning
(noun) abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
Source: WordNet® 3.1
Etymology
Noun
lightning (usually uncountable, plural lightnings)
A flash of light produced by short-duration, high-voltage discharge of electricity within a cloud, between clouds, or between a cloud and the earth.
A discharge of this kind.
(figuratively) Anything that moves very fast.
The act of making bright, or the state of being made bright; enlightenment; brightening, as of the mental powers.
Usage notes
• bolt, flash, strike are some of the words used to count lightning.
Coordinate terms
• thunderbolt
Adjective
lightning (not comparable)
Extremely fast or sudden; moving (as if) at the speed of lightning.
Verb
lightning (third-person singular simple present lightnings, present participle lightninging, simple past and past participle lightninged)
(impersonal, childish or nonstandard, intransitive) To produce lightning.
Usage notes
• The standard, but rare, verb for "produce lightning" is lighten, used only in the impersonal form "it lightens", or as "it’s lightening".
Source: Wiktionary
Light"ning, n. Etym: [For lightening, fr. lighten to flash.]
1. A discharge of atmospheric electricity, accompanied by a vivid
flash of light, commonly from one cloud to another, sometimes from a
cloud to the earth. The sound produced by the electricity in passing
rapidly through the atmosphere constitutes thunder.
2. The act of making bright, or the state of being made bright;
enlightenment; brightening, as of the mental powers. [R.] Ball
lightning, a rare form of lightning sometimes seen as a globe of fire
moving from the clouds to the earth.
– Chain lightning, lightning in angular, zigzag, or forked flashes.
– Heat lightning, more or less vivid and extensive flashes of
electric light, without thunder, seen near the horizon, esp. at the
close of a hot day.
– Lightning arrester (Telegraphy), a device, at the place where a
wire enters a building, for preventing injury by lightning to an
operator or instrument. It consists of a short circuit to the ground
interrupted by a thin nonconductor over which lightning jumps. Called
also lightning discharger.
– Lightning bug (Zoöl.), a luminous beetle. See Firefly.
– Lightning conductor, a lightning rod.
– Lightning glance, a quick, penetrating glance of a brilliant eye.
– Lightning rod, a metallic rod set up on a building, or on the
mast of a vessel, and connected with the earth or water below, for
the purpose of protecting the building or vessel from lightning.
– Sheet lightning, a diffused glow of electric light flashing out
from the clouds, and illumining their outlines. The appearance is
sometimes due to the reflection of light from distant flashes of
lightning by the nearer clouds.
Light"ning, vb. n.
Definition: Lightening. [R.]
Source: Webster’s Unabridged Dictionary 1913 Edition