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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]
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.
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; 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]
attachable combined form of attach.
attaché someone assigned to a governmental delegation or embassy, usu. for a specific function.
attaché case a flat rectangular briefcase, hinged like a suitcase, and usu. used for carrying business papers or documents.
attached having fond or affectionate feelings for and not wanting to part with. [4 definitions]