LUMINESCENCES

Noun

luminescences

plural of luminescence

Source: Wiktionary


LUMINESCENCE

Lu`mi*nes"cence, n. [See Luminescent.]

1. (Physics) Any emission of light not ascribable directly to incandescence, and therefore occurring at low temperatures, as in phosphorescence and fluorescence or other luminous radiation resulting from vital processes, chemical action, friction, solution, or the influence of light or of ultraviolet or cathode rays, etc.

2. (Zoöl.) (a) The faculty or power of voluntarily producing light, as in the firefly and glowworm. (b) The light thus produced; luminosity; phosphorescence.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

24 February 2025

ANOMALY

(noun) (astronomy) position of a planet as defined by its angular distance from its perihelion (as observed from the sun)


coffee icon

Coffee Trivia

According to Guinness World Records, the largest coffee shop is the Al Masaa Café, which has 1,050 seats. The coffee shop was inaugurated in Riyadh, Saudi Arabia, on 13 August 2014.

coffee icon