Abbreviation - Definition

Abbreviation (from Latin brevis "short") is strictly a shortening, but more particularly, an abbreviation is a letter or group of letters, taken from a word or words, and employed to represent them for the sake of brevity.

Style conventions

In modern English there are several conventions for abbreviations and the choice may be confusing. The only rule universally accepted is that one should be consistent, and to this end publishers express their preferences in a style guide.

Questions which arise include the following:

• Use of upper or lower case letters. If the original word was capitalised, then the first letter of its abbreviation should retain the capital, e.g., Lev. for Leviticus. When abbreviating words spelt with lower case letters, there is no consistent rule.
• Use of periods (full stops) and spaces, e.g. when abbreviating United States, should one write US, U.S. or U. S.? In American English the period is usually added if the abbreviation may be interpreted as a word, though some American writers do not use a period here. There is no stop/period between letters of the same word, e.g., St. and not S.t. for Saint.
• Many British publications and websites (notably the BBC) follow these guidelines:
  • If the abbreviation retains the last letter of the original (as, for example "Mister"), the period is not included: Mr John Smith.
  • If the abbreviation does not have the last letter of the original, the period is included. "exempli gratia" is abbreviated as "e.g." (though many British writers would use "eg").
  • If used to refer to a country or a group like the United States or United Nations, the period is not included: US and UN respectively.
  • Acronyms are sometimes referred to with only the first letter of the abbreviation capitalised. For instance, the North Atlantic Treaty Organization can be abbreviated as Nato, and Severe Acute Respiratory Syndrome as Sars. Initialisms (which are similar to acronyms but which are not pronounced as words) are always written in capitals, for instance the British Broadcasting Corporation is abbreviated to BBC, never Bbc.
• Plurals are often formed by doubling up the last letter of the abbreviation: MS=manuscript, MSS=manuscripts; p=page, pp=pages; s=section, ss=sections)
• Whether to add an apostrophe for a plural where the plural is not formed by doubling up the last letter: should one write CDs or CD's? The apostrophe is not needed grammatically but sometimes is added to make it clear that the s is not part of the abbreviation.

In East Asian languages which use Chinese ideograms instead of an alphabet, abbreviations are similarly formed by using key characters instead of letters. For example, in Japanese the term for the United Nations, kokusai rengō (国際連合) is often abbreviated to kokuren (国連). Those words that abberviated likes kokuren, are called ryakugo (略語) in Japanese.

Examples

• List of classical abbreviations
• List of mediaeval abbreviations
• List of abbreviations in use in 1911
• List of acronyms and initialisms

See also

• initialism, acronym, apocopation, TLA
• Internet slang, list of computing and IT abbreviations, list of medical abbreviations, list of government and military acronyms, abbreviations used in CIA World Factbook,
• ISO language code, ISO country code.
• Ditloid

External links

• STANDS4.com (http://www.STANDS4.com)—An acronyms and abbreviations directory (over 300,000 entries)