| academy |
An academy is a school. Usually an academy is a private school. People have to pay to go to a private school. Some academies focus on a particular type of thing, such as art, music, military training, or science. Academies give special classes for these things. Some academies are regular schools for school children, and some academies give classes for adult students, especially in things like music, drama, or art. |
| adobe |
Adobe is a type of building material that is made from a mixture of clay and straw. The mixture is shaped into bricks and dried in the sun. |
| advertising |
If someone does advertising, they create advertisements. An advertisement is a notice that tells people about things they can buy or things that are happening. You can see advertisements on TV or hear them on the radio. Sometimes you see them online. Advertising is also a business and a type of job. Some people do advertising for a living. They write advertisements or work to get them out to the public. |
| agate |
a type of quartz that has forms or bands of different colors that look like clouds. [1/2 definitions] |
| agreement |
Some agreements are a serious and special promise. If someone accepts this type of agreement, it means that they will be breaking a rule or a law if they do not do what they promise. Usually this kind of agreement is written on paper, and a person signs their name on the paper to accept it. [1/4 definitions] |
| alloy |
If people mix one type of metal with another type of metal, they make an "alloy." An alloy is a substance made by mixing two or more metals together. If people mix one type of metal with some other kind of substance, the new substance is also called an "alloy." |
| amphibian |
An amphibian is a type of animal. Amphibians live in the water for one part of their lives and on land for the other. Frogs and toads are some animals that are amphibians. |
| analyst |
someone trained or skilled in a particular type of analysis. |
| and so forth |
with more of the same type. [1/2 definitions] |
| and so on |
with more of the same type. [1/2 definitions] |
| anemone |
a type of plant related to the buttercup that has large white, blue, purple, or red flowers. |
| ape |
An ape is a certain type of animal. One kind of ape is the gorilla. Apes are similar to monkeys, but they have no tail, and they are quite large. Apes are also very intelligent. They live in the forests of Africa and Asia. |
| arrange |
to change so as to fit a particular type of musical performance. [1/3 definitions] |
| arrangement |
a piece of music that has been changed to fit a particular type of performance. [1/5 definitions] |
| article |
An article is a thing or type of thing. [2/3 definitions] |
| bacterium |
A bacterium is a single bit or type of "bacteria." Bacteria are very, very small living things made up of one cell each. Bacteria live in most living things and in all parts of the earth. Most bacteria are useful to people. They are important in making soil and helping people to digest food, for example. Some bacteria are harmful, though, and cause disease. |
| bald eagle |
A bald eagle is a type of eagle that lives in the United States, northern Mexico, and Canada. An eagle is a large bird with a strong, curved beak and big, sharp claws. A bald eagle is an especially large eagle and is dark brown with a white head and tail. |
| ballet |
Ballet is a type of dance that uses exact, graceful movements. The names of the movements come from French. Girls who study ballet wear special shoes that let them dance on their toes. Boys study ballet too, and they have to be very strong to jump high and to lift up the girls. It takes a lot of practice and strength to become very good at ballet. [1/2 definitions] |
| basalt |
Basalt is a heavy, dark-colored rock made by volcanoes. It is the main type of rock found along the bottom of the ocean. You can see basalt forming when lava flows down a volcano and cools. |
| biome |
a major type of global region, such as forest, desert, or grassland, characterized by the community of plants and animals that have adapted to life under the particular soil and climatic conditions that a particular region presents. |
| biplane |
an early type of airplane with two sets of wings mounted one above the other. |