| -atory |
of or pertaining to. [3 definitions] |
| a tough nut to crack |
a problem or situation that is difficult to solve or cope with. [2 definitions] |
| ATP |
a biochemical compound that serves to store energy in all living cells; adenosine triphosphate. (Cf. ADP.) |
| at present |
right now. |
| atrabilious |
sad, gloomy, or melancholy. [2 definitions] |
| atresia |
the abnormal absence or closure of an orifice or passage within the body. [2 definitions] |
| at rest |
inactive, not moving, or in repose. [2 definitions] |
| Atreus |
in Greek mythology, king of Mycenae and father of Agamemnon and Menelaus. |
| a trifle |
a little bit; somewhat; slightly. |
| atrioventricular |
of, involving, or located between the atria and ventricles of the heart. |
| atrium |
an enclosed courtyard, esp. in ancient Roman houses or early Christian churches. [2 definitions] |
| atrocious |
exceptionally evil, ruthless, or brutal. [2 definitions] |
| atrocity |
an exceptionally evil, ruthless, or cruel act. [2 definitions] |
| atrophy |
a gradual wasting away of a body part, esp. from insufficient use or nourishment. [4 definitions] |
| atropine |
a toxic extract of belladonna used to control spasms and pain and to enlarge the pupils of the eye. |
| at sea |
on the ocean waters. [2 definitions] |
| at someone's beck and call |
willing to fulfill or subject to another's commands or wishes. |
| at stake |
in a position to be lost if efforts at saving do not occur or are not successful; in jeopardy. |
| at stud |
for hire for breeding, as a stallion. |
| at swords' points |
mutually hostile and likely to engage in combat; antagonistic. |
| attach |
to join, fasten, or connect; affix. [4 definitions] |