| Olympiad |
a celebration of the modern Olympic Games; Olympics. |
| Olympian |
of, concerning, or denoting the major ancient Greek gods that lived on Olympus. [5 definitions] |
| Olympic |
of or pertaining to the Olympic Games. [3 definitions] |
| Olympic Games |
an international amateur athletic competition patterned after the ancient Greek games, held every four years in different countries, with separate dates and locations for winter and warm-weather sports. |
| Olympus |
Mount Olympus, a mountain in northern Greece, believed in ancient times to be the dwelling place of the gods. |
| -oma |
tumor. |
| Oman |
a country on the Indian Ocean northeast of Yemen and west of Saudi Arabia. |
| Omar Khayyam |
a Persian poet and mathematician (b.1050?--d.1123?). |
| omasum |
the third stomach of a cud-chewing animal such as a cow, located between the reticulum and the abomasum. |
| OMB |
abbreviation of "Office of Management and Budget." |
| ombudsman |
a man employed by a government, institution, or the like to hear and attempt to resolve complaints, as from citizens, employees, or students. |
| ombudsperson |
a person employed by a government, institution, or the like to hear and attempt to resolve complaints, as from citizens, employees, or students. |
| ombudswoman |
a woman employed by a government, institution, or the like to hear and attempt to resolve complaints, as from citizens, employees, or students. |
| omega |
the name of the twenty-fourth and last letter of the Greek alphabet. [2 definitions] |
| omelet |
a dish made from beaten eggs that are cooked into a single sheet and folded, often over a filling of cheese, tomatoes, mushrooms, or other ingredients. |
| omen |
an occurrence that is believed to be a supernatural indicator of future good or evil. [3 definitions] |
| omertà |
(Italian) a code of silence that prevents adherents from giving to authorities information concerning activities of a criminal organization. |
| omicron |
the name of the fifteenth letter of the Greek alphabet. |
| ominous |
indicating or threatening future evil or unpleasantness. [2 definitions] |
| omissible |
subject to or suitable for omission. |
| omission |
the act of omitting, or the condition of being omitted. [2 definitions] |