photodissociated
Look at other dictionaries:
Atmosphere — An atmosphere (from Greek ατμός atmos , vapor + σφαίρα sphaira , sphere ) is a layer of gases that may surround a material body of sufficient mass, [ [http://www.ontariosciencecentre.ca/school/clc/visits/glossary.asp Ontario Science Centre… … Wikipedia
comet — cometary /kom i ter ee/, cometic /keuh met ik/, cometical, adj. cometlike, adj. /kom it/, n. Astron. a celestial body moving about the sun, usually in a highly eccentric orbit, consisting of a central mass surrounded by an envelope of dust and… … Universalium
