dioxide
UK: daɪˈɒksaɪd | US: daɪˈɑːksaɪd
n. a compound containing two oxygen atoms bonded to another element or group.
The word "dioxide" combines the Greek prefix "di-" (meaning "two") with "oxide," derived from the French "oxygène" (oxygen) and the Greek "-eidēs" (resembling). The term reflects its chemical composition—a molecule with two oxygen atoms attached to another element (e.g., carbon dioxide, CO₂). The prefix "di-" is widely used in scientific terminology to denote duality, while "oxide" anchors the word in chemistry.
Carbon dioxide is a greenhouse gas that contributes to global warming.
Plants absorb dioxide during photosynthesis and release oxygen.
The lab technician measured the dioxide levels in the air sample.
Silicon dioxide is a common component of sand and quartz.
High concentrations of sulfur dioxide can cause respiratory problems.