| astronomy |
the branch of science concerned with the physical universe beyond the atmosphere of the earth. |
| as well |
in addition; also; too. |
| as well as |
and also; and moreover. [2 definitions] |
| as yet |
up until now; up to this point. |
| asylum |
(old-fashioned) an institution for the care of those who are unable to maintain themselves, such as orphans or the severely mentally ill. [3 definitions] |
| at1 |
on or in the location of. [5 definitions] |
| Atacama Desert |
an extremely arid region of northern Chile that lies between the Pacific Ocean and the Andes mountains. |
| at all |
to even the slightest degree or extent; in the least (used in negative statements and questions only). |
| at all costs |
regardless of the effort or sacrifice necessary. |
| -ate1 |
to become, or to cause to become or have. [5 definitions] |
| ate |
past tense of eat. |
| at ease |
in the military, a standing position in which soldiers may relax but not leave formation or talk. [2 definitions] |
| at fault |
responsible for mistakes or errors. |
| at first |
in the beginning, or on the first occasion. |
| at full blast |
(informal) at maximum speed or capacity. |
| at full tilt |
at maximum speed. |
| atheist |
one who believes that there is no god or gods. |
| Athena |
in Greek mythology, the goddess of wisdom, the arts, and strategic warfare; Minerva. |
| Athens |
the capital of Greece in modern and classical times. |
| athlete |
a person who participates in sports or other physical activities, often as a competitor. [2 definitions] |
| athlete's foot |
a common contagious skin infection characterized by itching and scaling, and caused by fungi that thrive in warm moist places, such as between the toes. |