| arthropod |
a class of invertebrates with hard, segmented bodies and jointed legs, including insects, spiders, crustaceans, and myriapods. |
| artichoke |
a tall thistlelike plant whose flower head, composed of thick, leaflike scales, is cooked and eaten. [2 definitions] |
| article |
a single item or thing, esp. one of a class or group. [4 definitions] |
| articulate |
spoken in clear and distinct words or syllables, or having a tendency to speak clearly and distinctly. [10 definitions] |
| articulated lorry |
(chiefly British) a very large truck, consisting of a cab and freight-hauling trailer, that carries goods over long distances; tractor-trailer; semi. |
| artifact |
any object made by human beings, esp. one of an earlier era. [2 definitions] |
| artificial |
created by human beings. [3 definitions] |
| artificial intelligence |
research in and development of computer programs that imitate human thought processes such as reasoning or decision-making. |
| artificial respiration |
the resumption or continuation of a person's breathing, as by forcing air into and out of the person's lungs. |
| artillery |
mounted large-caliber weapons, such as cannons or rocket launchers, used in land warfare and manned by a crew. [3 definitions] |
| artisan |
a person skilled in making things, esp. with the hands; craftsperson. |
| artist |
a person who is skilled at painting, sculpting, music, writing, or the like. [3 definitions] |
| artistic |
of or relating to art or artists. [3 definitions] |
| art room |
a room in a school where art is taught and where art materials are kept. |
| As |
symbol of the chemical element arsenic. |
| as1 |
equally; to the same extent or degree. [11 definitions] |
| ASAP |
abbreviation of "as soon as possible" (sometimes pronounced as an acronym.) |
| asbestos |
one of two forms of a mineral that can be separated into fibers, is not combustible, and is resistant to chemical action, used to make fireproofing and insulating materials. [2 definitions] |
| ascend |
to go upward; climb; rise. [5 definitions] |
| ascent |
the act of going up; rise. [4 definitions] |
| ascertain |
to come to know (some information) with complete certainty, especially through a process of investigation; determine. |