Word(s) in meaning: chat "global warming"
Postal codes: USA: 81657, Canada: T5A 0A7
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What does O stand for?
O stands for Optional Levels (board test for high schoolers, UK)
See other meanings of O
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Ohne Hauch (antigen)
Omikron (German: Omicron; 15th letter of the Greek alphabet)
Order of Magnitude (computer algorithms)
Organized Naval Reserve (US Navy)
Origin Server (Internet)
Oscar (aviation letter code)
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