| acronym |
a type of abbreviation used as a word and pronounced as a word. An acronym is formed by combining the initial letters (or initial parts) of a string of words. The pronunciation of an acronym is based on the typical rules of pronouncing words in a language and is not made up of the sounds of the names of individual letters. The abbreviations "AIDS," "FICA," and "PIN" are acronyms, but the abbreviations "FBI," ATM," and "DVD" are not. |
| acrophobia |
an overwhelming fear of high places. |
| across |
from one side or end to the other of. [6 definitions] |
| acrylic |
of or characteristic of the corrosive liquid acrylic acid. [2 definitions] |
| act |
something done, esp. a specific instance; deed. [14 definitions] |
| action |
something that is done, is being done, or will be done. [8 definitions] |
| action verb |
a verb that shows its subject performing some action. "Run," "eat," "fly," and "sing" are examples of action verbs. |
| activate |
to initiate action in; make active. [6 definitions] |
| active |
constantly doing something; busy; energetic. [7 definitions] |
| actively |
in a way that involves making an effort, taking action, or participating; not passively. |
| activist |
one who advocates a cause with vigor or militance. |
| activity |
the condition or state of being active. [4 definitions] |
| actor |
one who plays roles in dramatic productions on stage, in films, or on radio and television. [2 definitions] |
| actress |
a woman or girl who plays roles in dramatic productions. |
| actual |
truly existing or happening, not just potentially or in the imagination. [3 definitions] |
| actually |
as a matter of fact; really. [2 definitions] |
| act up |
to behave in a bad or mischievous way; misbehave. [3 definitions] |
| acupuncture |
a traditional Chinese practice of pricking certain parts of the body with fine needles to relieve pain or cure disease. [2 definitions] |
| acute |
of great severity or intensity. [7 definitions] |
| acute angle |
an angle of less than ninety degrees. |
| A.D. |
abbreviation of "anno Domini" (Latin); in the year of the Lord, or, since the birth of Jesus Christ (used in designating dates). |