A shortened form of a word or phrase used for brevity in place of the whole, consisting of the first letter, or the first few letters, followed by a period (full stop), for example, assoc. for association or P.O. for post office. Some terms have more than one abbreviation (v. or vol. for volume). Abbreviated abbr. Also used as an umbrella term for any shortened form of a word or phrase, not an acronym, initialism, or contraction, for example, the postal code CT for Connecticut. 


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