- 1. n. A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96. Source: opted
- 2. n. Chlorine used in bleaching. Source: opted
- 3. n. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust Source: wordnet
- 4. A colorless, tasteless, odorless, gaseous element occurring inthe free state in the atmosphere, of which it forms about 23 per centby weight and about 21 per cent by volume, being slightly heavierthan nitrogen. Symbol O. Atomic weight 15.96. Source: adambom
- 5. n:100 n. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust Source: ecdict
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