Videoco

/kou/

The word co is a short but complex noun that serves several roles in English. It is most commonly recognized as the postal abbreviation for the state of Colorado in the Rocky Mountains, but it also identifies a conscientious objector who refuses military service. In the scientific world, it represents the metallic element cobalt or the dangerous, odorless gas known as carbon monoxide. This lesson explores these diverse definitions and provides clear examples for each. You will learn how to distinguish between geographical, ethical, and chemical contexts to use the term accurately. Watch this video to master the various meanings and applications of co.

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A scientist carefully handles a sample of the element cobalt in a laboratory.