I've noticed that the use of periods in abbreviations is often inconsistent.
For example:
Los Angeles = L.A. (more common periods) New York City = NYC (usually no periods) United States = U.S. (I see "US" just as often, but I've been told U.S. is correct) Federal Bureau of Investigation = FBI (periods less often) Any Police Department = PD (no periods)
How does one determine when to use periods in an abbreviation?
Top answer
Periods are rarely used in British English.
— Fivejedjon
Periods are rarely used in British English.
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