From the Greek for "acid former", this gas is the most abundant element in the earth's crust
Oxygen is the most common component of the Earth's crust (49% by mass), 
the... [DOC] [TLE] Oxygenthe essentials [WebElements Periodic Table] [PAR] Oxygen is the third most abundant element found in the sun, and it plays a part in 
... Dioxygen, O2, is a diatomic colourless oxidizing gas but a pale blue liquid 
upon ... the Greek words "oxy genes" meaning "acid" (sharp) and "forming" (acid 
former).