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aardvark	a large mammal with a long snout, long ears, a long tail, and with long fur mostly around its legs. Aardvarks are active at night, when they use their powerful claws to dig open ant or termite nests. They catch their food with their long, sticky tongue. Aardvarks live in southern and central Africa. Although they are sometimes called anteaters, aardvarks are not closely related to any other kind of mammal.
abalone	a large sea snail that has several shiny colors on the inside of its shell. Abalone are mollusks. People eat abalone meat and make decorations from the shells.
abound	to be found in large numbers or amounts.
abundance	a very large amount; plentiful supply.
abundant	large in amount or number; more than enough.
active	of a star, giving off large quantities of energy. [1/4 definitions]
aircraft carrier	a very large ship with a flat deck on which airplanes can take off and land.
airliner	a large airplane used to fly people from one place to another.
airport	a large area of level land where airplanes can land and take off.
albatross	a very large sea bird found mostly in the Southern Hemisphere. Albatrosses have webbed feet, long narrow wings, and hooked beaks.
algae	organisms that live mainly in the water and make their food through photosynthesis. Algae are different from plants in that they have no true leaves, roots, or stems. Seaweeds are one form of algae, but there are many others, including a large number that cannot be seen without a microscope. "Algae" is the plural form of the word "alga."
alimentary canal	the tube in the body through which food travels as it is digested. The alimentary canal goes from the mouth to the anus, and includes the esophagus, the stomach, and the small and large intestines.
alligator	a large reptile with short legs, a long body and tail, and a long, wide snout. Alligators are protected by thick skin with many hard bumps. They live in rivers, lakes, swamps, and other bodies of water in the southeast United States and in China. They usually eat insects, fish, turtles, snakes, birds, and other water animals, but have been known to attack small land mammals. They are closely related to crocodiles. Chinese alligators are endangered because their habitat is being changed by people.
Alps	The Alps are a large range of mountains in Europe. The highest mountains of the Alps are located in Switzerland.
Alsatian	the British word for "German shepherd," a breed of large brown or black dogs that are often used as guard dogs and as guide dogs for blind people.
ample	large in size, amount, or space; as much or more than is needed.
anaconda	a very large snake found in South America. Anacondas are not venomous but kill other animals by squeezing them until they cannot breathe. Anacondas can grow to over twenty feet long.
anemone	a type of plant related to the buttercup that has large white, blue, purple, or red flowers.
Angola	Angola is a country in Africa. It is a large country on the coast of the Atlantic Ocean. Angola is home to the African buffalo and also to lions, zebras, and giraffes.
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. [1/2 definitions]
ant	an insect that lives in large, organized groups called colonies. Most kinds of ants live in or on the ground. Ants are related to bees and wasps.

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