| amendment |
an official change made to a bill, law, or other document. |
| amphitheater |
an oval or round building with seats rising in rows from an open, central area. Amphitheaters are used for sports and other public events. |
| amusement park |
an outdoor place with games, rides, and other forms of entertainment. |
| anaconda |
a very large snake found in South America. Anacondas are not poisonous but kill other animals by squeezing them until they cannot breathe. Anacondas can grow to over twenty feet long. |
| anesthesia |
absence of pain or other feeling in the body. [2 definitions] |
| Angora |
(often lower case) yarn or cloth made from either of these kinds of hair. Angora is used to make sweaters and other articles of clothing. [1/3 definitions] |
| animal |
one of a large group of living things that can move around by themselves to find food. Animals eat plants, funguses, or other animals. Birds, reptiles, fish, amphibians, mammals, insects, snails, and worms are some of the major kinds of animals. [2 definitions] |
| anniversary |
the date each year that is the same date on which a wedding or other important event happened. [1/2 definitions] |
| anteater |
a mammal that uses its long, sticky tongue to eat ants and termites. True anteaters have no teeth, are furry, and live in Central or South America. They are related to armadillos and sloths. Other kinds of mammals that eat ants are also sometimes called anteaters, but they are not related to American anteaters. |
| antenna |
one of a pair of long, thin body parts on the head of insects, crabs, and other animals. Antennae are used to feel and smell. [1/2 definitions] |
| antibiotic |
substance derived from fungi or other organisms and used to destroy or prevent the growth of bacteria or other disease-causing organisms. |
| apart |
away from each other in time or space; at or to a distance; separated. [1/2 definitions] |
| aquarium |
a tank or other container filled with water in which water animals and plants are kept. [1/2 definitions] |
| Arab |
a member of a southwest Asian people that makes up most of the population of Arabia and other parts of the Middle East. [1/4 definitions] |
| arcade |
a covered passageway that has shops or places to play video or other games along the sides. [1/2 definitions] |
| arena |
a stage, ring, or other enclosed area where shows or sports events are held. [1/3 definitions] |
| aristocracy |
a class of people who have a high social position because of the family they are born into. Members of the aristocracy are usually richer and have more privileges than other members of society. [1/2 definitions] |
| armadillo |
a mammal whose body is protected by hard, bony plates. Armadillos live in Central and South America, and the southern United States. Some kinds of armadillos are only six inches long; other kinds grow up to four feet in length. They eat mostly insects and are related to sloths and anteaters. |
| armor |
a suit made of leather, metal, or other strong material, worn to protect the body during battle. [1/4 definitions] |
| armory |
a place where weapons and other military equipment are made or stored. |
| art |
the works produced by painters, writers, musicians, sculptors, film directors, and other kinds of artists. [1/4 definitions] |