| 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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