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co-
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Tweet pref. 1. Together; joint; jointly; mutually: coeducation. 2. a. Partner or associate in an activity: coauthor; cofounder. b. Subordinate or assistant: copilot. 3. To the same extent or degree: coextensive. 4. Complement of an angle: cotangent. [Middle English, from Latin, variant of com-, com-.] |
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