OA

abbreviation (1)

Definition of OA

 (Entry 1 of 2)

osteoarthritis OA … usually occurs after age 45 and involves "wear and tear" on the joints.— Andrew Weil

o/a

abbreviation (2)

Definition of o/a (Entry 2 of 2)

on or about

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More Definitions for OA

Medical Definition of OA

osteoarthritis

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