COA

COA is an acronym formed from initial letters in English. Its meaning depends on the context in which it is used: administration, military, accounting, industry and healthcare. For this reason, when reading a text, one must consider the overall meaning of the passage to determine which sense is intended.

Acronyms of this kind are common in official documents, where a long repeated word is replaced by three letters. Formal texts typically write out the full term on first mention and then follow it with the acronym.

Common meanings

One of the most frequent meanings is "Course of Action"—a plan or sequence of steps chosen to reach an objective. This term is consistently used in military planning and disaster management, where multiple plans are compared and one is selected.

Another common meaning is "Certificate of Analysis"—a test report in which a manufacturer certifies the results of quality testing of a product, especially medicines, chemicals and food. The certificate records which properties were tested and the result of each test.

It is also used for "Coat of Arms" (the heraldic emblem of a country or family), "Chart of Accounts" (the list of accounting accounts used by a company), and "Certificate of Authenticity" (a document certifying that something, such as artwork, is genuine).

Usage and disambiguation

Because the acronym has multiple meanings, many organizations establish rules for how it is used within their documents. For example, in an accounting document COA always refers to the chart of accounts, while in a quality control document it refers to the certificate of analysis.