Common Abbreviations
| A.B. | Artium Baccalaureus [Bachelor of Arts] | | abbr. | abbreviation(s), abbreviated | | Acad. | Academy | | A.D. | anno Domini [in the year of the Lord] | | alt. | altitude | | A.M. | ante meridiem [before noon]; Artium Magister [Master of Arts] | | AM | amplitude modulation | | Assn. | Association | | at. no. | atomic number | | at. wt. | atomic weight | | Aug. | August | | Ave. | Avenue | | AWOL | absent without leave | | b. | born, born in | | B.A. | Bachelor of Arts | | B.C. | Before Christ | | b.p. | boiling point | | B.S. | Bachelor of Science | | Btu | British thermal unit(s) | | C | Celsius (centigrade) | | c. | circa [about] | | cal | calorie(s) | | Capt. | Captain | | cent. | century, centuries | | cm | centimeter(s) | | co. | county | | Col. | Colonel; Colossians | | Comdr. | Commander | | Corp. | Corporation | | Cpl. | Corporal | | cu | cubic | | d. | died, died in | | D.C. | District of Columbia | | Dec. | December | | dept. | department | | dist. | district | | div. | division | | Dr. | doctor | | E | east, eastern | | ed. | edited, edition, editor(s) | | est. | established; estimated | | et al. | et alii [and others] | | F | Fahrenheit | | Feb. | February | | fl. | floruit [flourished] | | fl oz | fluid ounce(s) | | FM | frequency modulation | | ft | foot, feet | | gal. | gallon(s) | | Gen. | General, Genesis | | GMT | Greenwich mean time | | GNP | gross national product | | GOP | Grand Old Party (Republican Party) | | Gov. | governor | | grad. | graduated, graduated at | | H | hour(s) | | Hon. | the Honorable | | hr | hour(s) | | i.e. | id est [that is] | | in. | inch(es) | | inc. | incorporated | | Inst. | Institute, Institution | | IRA | Irish Republican Army | | IRS | Internal Revenue Service | | Jan. | January | | Jr. | Junior | | K | Kelvin | | kg | kilogram(s) | | km | kilometer(s) | | £ | libra [pound], librae [pounds] | | lat. | latitude | | lb | libra [pound], librae [pounds] | | Lib. | Library | | long. | longitude | | Lt. | Lieutenant | | Ltd. | Limited | | m | meter(s) | | M | minute(s) | | M.D. | Medicinae Doctor [Doctor of Medicine] | | mg | milligram(s) | | mi | mile(s) | | min | minute(s) | | mm | millimeter(s) | | mph | miles per hour | | Mr. | Mister (always abbreviated) | | Mrs. | Mistress (always abbreviated) | | Msgr | Monsignor | | mt. | Mount, Mountain | | mts. | mountains | | Mus. | Museum | | N | north; Newton(s) | | NAACP | National Association for the Advancement of Colored People | | NASA | National Aeronautics and Space Administration | | NATO | North Atlantic Treaty Organization | | NE | northeast | | no. | number | | Nov. | November | | OAS | Organization of American States | | Oct. | October | | Op. | Opus [work] | | oz | ounce(s) | | pl. | plural | | pop. | population | | pseud. | pseudonym | | pt. | part(s) | | pt | pint(s) | | pub. | published; publisher | | qt | quart(s) | | Rev. | Revelation; the Reverend | | rev. | revised | | R.N. | registered nurse | | rpm | revolution(s) per minute | | RR | railroad | | S | south | | S | second(s) | | SEATO | Southeast Asia Treaty Organization | | SEC | Securities and Exchange Commission | | sec | second(s); secant | | Sept. | September | | Ser. | Series | | Sgt. | Sergeant | | sq | square | | Sr. | Senior | | SSR | Soviet Socialist Republic | | St. | Saint; Street | | UNICEF | United Nations Children's Fund | | uninc. | unincorporated | | Univ. | University | | U.S. | United States | | USA | United States Army | | USAF | United States Air Force | | USCG | United States Coast Guard | | USMC | United States Marine Corps | | USN | United States Navy | | USSR | Union of Soviet Socialist Republics | | VFW | Veterans of Foreign Wars | | VISTA | Volunteers in Service to America | | vol. | volume(s) | | vs. | versus | | W | west; watt(s) | | WHO | World Health Organization | | wt. | weight | | yd | yard(s) | | YMCA | Young Men's Christian Association | | YWCA | Young Women's Christian Association |
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