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
abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
furiously angry; "willful stupidity makes him absolutely livid"
(of a light) imparting a deathlike luminosity; "livid lightning streaked the sky"; "a thousand flambeaux...turned all at once that deep gloom into a livid and preternatural day"- E.A.Poe
the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days"
a period of time containing 365 (or 366) days; "she is 4 years old"; "in the year 1920"
a period of time occupying a regular part of a calendar year that is used for some particular activity; "a school year"