There are 2 main definitions of Co in English:

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Co 1

symbol

The chemical element cobalt.

For editors and proofreaders

Syllabification: Co

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There are 2 main definitions of Co in English:

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CO 2

Pronunciation: /ˌsēˈō/

abbreviation

1Colorado (in official postal use).
2Commanding Officer.

For editors and proofreaders

Syllabification: CO

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