A few universally recognized abbreviations are sometimes required. Others are acceptable but in general avoid alphabet soup.
Apply the same guidelines to acronyms -- pronounceable words formed from the letters in a series of words: Alcoa, NATO, radar, scuba, etc.
Guidelines:
1. Use Dr., Gov., Lt. Gov., Mr., Mrs., Rep., the Rev., Sen., and abbreviate certain military titles before a name outside direct quotations. In direct quotations, spell out all except Mr., Mrs. and Dr. before a name.
Never abbreviate president, vice president, secretary, attorney general, ambassador, chairman, professor. See titles.
2. Abbreviate junior or senior after a person's name. Abbreviate company, corporation, incorporated and limited after a company name. See company and academic degrees.
3. Use A.D., B.C., a.m., p.m., No. and abbreviate certain months with the day of the month. See months.
Right: In 450 B.C.; at 9:30 a.m.; in room No. 6; on Sept. 16.
Wrong: Early this a.m. he asked for the No. of your room. The abbreviations are correct only with the figures.
Right: Early this morning he asked for the number of your room.
4. Abbreviate avenue, boulevard and street in numbered addresses: He lives on Pennsylvania Avenue. He lives at 1600 Pennsylvania Ave. See addresses.
5. Certain states, the United States, European Union, United Kingdom, United Nations are sometimes abbreviated. See states and individual entries.
6. Some organizations are widely recognized by their initials: CIA, FBI, GOP, TVA, which are acceptable on first reference. Even then, an abbreviation is not always necessary. If it fits the occasion, use Federal Bureau of Investigation, for example, rather than FBI.7. Do not use an abbreviation or acronym in parentheses after a full name. If the abbreviation would not be clear without this arrangement, do not use it. Do not reduce names to unfamiliar abbreviations solely to save a few words.At times an abbreviation or acronym requires special handling, especially if an English translation is needed.Examples, with suggested solution in italics:The Federal Security Service, known by its Russian initials FSB, is a successor to the KGB.The Independent Moralizing Front, or Frente Independiente Moralizador, is headed by Fernando Olivero Vega. Six members of the FIM were