ETHENE
\ˈiːθiːn], \ˈiːθiːn], \ˈiː_θ_iː_n]\
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a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic
By Princeton University
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Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.