Xenon vs. HID — What's the Difference?

Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts.

Past tense and a past participle of hide1.

A colorless, odorless, noble gas element found in minute quantities in the atmosphere, extracted commercially from liquefied air and used in stroboscopic, bactericidal, and laser-pumping lamps. Atomic number 54; atomic weight 131.29; melting point -111.74°C; boiling point -108.09°C; density (gas) 5.89 grams per liter; specific gravity (liquid, at -109°C) 2.95; valence 0, 2, 4, 6. See Periodic Table.

(archaic) hide

The chemical element (symbol Xe) with an atomic number of 54. It is a colorless, odorless, unreactive noble gas, used notably in camera flash technology.

A very heavy, inert gaseous element of the noble gas group, occurring in the atmosphere in the proportion of one volume is about 20 millions. It was discovered by Ramsay and Travers in 1898. It can be condensed to a liquid boiling at -107° C., and to a solid which melts at -111.9° C. Symbol Xe (formely also X); atomic number 54; atomic weight 131.3.

A colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts