| Astronomer | ASCII | Assistive technology |
| Asphalt | Astronaut | Asia |
| Assault rifleM16A2 assault rifle. Assault rifles are selective fire intermediate-power rifles. Note: this term should not be confused with the loosely-defined term assault weapon, which refers to any number of classes of pistols, rifles, and shotguns. Mission The typi | AsteroidsThis page is about the computer game. For the planet-like space object, see asteroid''. Asteroids is a popular vector-based video arcade game released in 1979 by Atari. The object of the game is for the player to shoot and destroy asteroids without being | Asparagalesaccording to the Angiosperm Phylogeny Group Agapanthus Agavaceae Alliaceae Amaryllidaceae Aphyllanthaceae Asparagaceae Asphodelaceae Asteliaceae Blandfordiaceae Boryaceae Doryanthaceae Hemerocallidaceae Hyacinthaceae Hypoxidaceae Iridaceae Ixioliriaceae L |
| AsteralesSee text The Asterales are an order of dicotyledonous flowering plants which include the composite family Asteraceae ( sunflowers and daisies) and its related families. The order is cosmopolitic, and includes mostly herbaceous species, although a small nu | AsteroidAn asteroid is a small, solid object in our Solar System, orbiting the Sun. An asteroid is an example of a minor planet (or planetoid , which are much smaller than planets. The asteroids are believed to be remnants of the protoplanetary disc which were no | AsterismAsterism has several meanings: In astronomy, it refers to a constellation-like group of stars; see asterism (astronomy) In gemmology, it is an optical phenomenon; see asterism (gemmology) In typography, it refers to a symbol; see asterism (typography). |
| AstatineAstatine is a chemical element in the periodic table that has the symbol At and atomic number 85. This radioactive element occurs naturally from uranium and thorium decay and is the heaviest of the halogens. Notable characteristics This highly radioactive | Asteraceaemany, see list The aster or sunflower family (Family Asteraceae or, alternatively Family Compositae is a taxon of dicotyledonous flowering plants. The family name comes from the Genus Aster and refers to the star-shaped flower head of its members, typifie | As We May ThinkVannevar Bush's essay As We May Think first published in Atlantic Monthly in July 1945, argued that as humans turned from war, scientific efforts should shift from increasing physical abilities to making all previous collected human knowledge more accessi |
| Aspect ratio | Ashes series | Assembly line |
| Astrometry | Asa | Astronomical unit |
| Ashmore and Cartier Islands | Ashoka | Associativity |
| Association of C and C Plus Plus Users | Assembly language | Asgard |
| Assault | Ask and Embla | Aspirin |
| ASA | Astoria, Oregon | ASCII art |
| Astronomer Royal | Aslan | Assassins |
| Asbestos | ASP | Assembler |
| ASL | Assyria | Asterix |
| Ásatrú | Associative algebra | Astrology |
| Aster CT-80 | Astounding Magazine | Ascorbic acid |
| Asymmetric Digital Subscriber Line | Assault gun | Aston Martin |
| Asymmetrical relationship | Asset | Ascension Island |
| Ascanian | Asynchronous Transfer Mode | Asynchronous communication |
| Asian Development Bank | Aswan | Astronomical year numbering |
| Aspartame | ASCII Drawing Interchange file format | Ash |
| Asshole | Asociación Latinoamericana de Integración | Association for Computing Machinery |
| Assassin | Associate Justice of the Supreme Court of the United States | Asymptote |
| Aspiration (phonetics) | Ascending chain condition | Astable |
| ASROC | Astrid Lindgren | Asperger's syndrome |
| Asian Games | AS/400 | Associative storage |
| Asynchronous communications system | Asynchronous operation | As You Like It |
| Aston Villa F.C. | Ashley Judd | Aschelminthes |
| Assata Shakur | Astor Piazzolla | Asthma |
| Asti | Assured destruction | Asparagus (vegetable) |
| Asparagus soup | Assassination market | Assassins (musical) |
| Asymmetric warfare | Asteroid belt | Associated Press |
| Aspen, Colorado | Ass | Ascomycota |
| Astronomy | Ashikaga Yoshiharu | Asymmetric key algorithm |
| Asia-Pacific Network Information Centre | Assembly | Asia (band) |
| Asian | Ashkelon | Astronomical distance |
| Ashgabat | Astana | Asmara |
| Asunción | Ashland | Asher ben Jehiel |
| Ashi | Ascension | Asterisk |
| Assignment in Eternity | Ascaris lumbricoides | Asanga |