| aureus |
an ancient Roman gold coin that was a monetary unit from the reign of Julius Caesar to that of Constantine I. |
| au revoir |
(French) until we see each other again; good-bye for now. |
| auricle |
the visible, projecting portion of the ear. [3 definitions] |
| auricular |
of or relating to the ear or hearing. [3 definitions] |
| auriferous |
having gold as a component; gold-bearing. |
| auriform |
shaped like an ear. |
| Auriga |
a winter constellation in the northern sky, located between Perseus and Gemini and containing the bright triple star Capella and several star clusters; Charioteer. |
| aurochs |
an extinct wild ox once common in northern Africa, Europe, and western Asia, and probably an ancestor of domestic cattle. [2 definitions] |
| Aurora |
in Roman mythology, the goddess of dawn. [3 definitions] |
| aurora australis |
the aurora of the Southern Hemisphere, seen esp. near the South Pole; southern lights. |
| aurora borealis |
the aurora of the Northern Hemisphere, seen esp. near the North Pole; northern lights. |
| auscultation |
listening to the heart, lungs, or the like for the purpose of medical diagnosis, usu. with a stethoscope or other instrument. |
| auslander |
(German) a foreigner or outsider; alien. |
| auspice |
(usu. pl.) sponsorship or protection; patronage. [3 definitions] |
| auspicious |
likely to be followed by favorable events. |
| austere |
having a stern or solemn appearance or personality. [3 definitions] |
| austerity |
the condition or quality of being austere. [3 definitions] |
| Austin |
the capital of Texas. |
| austral1 |
of, concerning, or originating in the south; southern. [2 definitions] |
| austral2 |
the chief monetary unit of Argentina, equaling one hundred centavos. |
| Australasia |
Australia, New Zealand, and nearby islands south of the equator and north through Malaysia and the Philippines. |