| acuity |
sharpness or keenness, as of sense perception or understanding. |
| acumen |
superior insight; quickness and shrewdness of judgment, esp. in practical matters. |
| acuminate |
tapering to a sharp point, as a leaf or claw; pointed. [2 definitions] |
| acupressure |
a process or technique intended to relieve pain or cure disease by the application of pressure with the hands to specific parts of the body. [2 definitions] |
| acupuncture |
a traditional Chinese practice of pricking certain parts of the body with fine needles to relieve pain or cure disease. [2 definitions] |
| acupuncturist |
a person, esp. a physician, chiropractor, or healthcare professional, who practices acupuncture. |
| acute |
of great severity or intensity. [7 definitions] |
| acute accent |
a diacritical mark (´), placed over a vowel to indicate length or high pitch, or to indicate primary stress of a syllable. (Cf. grave accent.) |
| acute angle |
an angle of less than ninety degrees. |
| -acy |
characteristic, condition, position, or the like. |
| acyclovir |
an antiviral drug used in the treatment of herpes simplex viral infections, chickenpox, and shingles. |
| A.D. |
abbreviation of "anno Domini" (Latin); in the year of the Lord, or, since the birth of Jesus Christ (used in designating dates). |
| ad |
advertisement. [2 definitions] |
| ad- |
to; toward. [2 definitions] |
| ADA |
abbreviation of "American Dental Association." [2 definitions] |
| adage |
an old familiar saying that expresses folk wisdom; proverb. |
| adagio |
slowly (used as a musical direction). [4 definitions] |
| Adam |
according to the Old Testament, the name of the first man, created by God from dust, and the progenitor of the human race. |
| adamant |
unlikely to change in response to any request or argument; firmly decided or fixed; unyielding. [3 definitions] |
| adamantine |
made of, resembling, or having the hardness of adamant. [2 definitions] |
| Adam's apple |
the projection at the front of the human throat formed by the largest cartilage of the larynx, visible esp. in men. |