| acre |
a unit of area equal to 43,560 square feet, used to measure land. The acre is a standard unit of measurement in the United States and the United Kingdom. |
| acreage |
the number of acres in an area of land. |
| Africa |
Africa is one of the seven largest areas of land on the earth. These areas of land are called continents. Africa is the second largest continent on our planet. Only Asia is bigger than Africa. Africa is made up of more than fifty different countries, and people speak many different languages in these countries. Some of the languages are Swahili, Hausa, and Arabic. |
| aircraft carrier |
a very large ship with a flat deck on which airplanes can take off and land. |
| air force |
An air force is a group of people who fight like an army but fight in the air instead of on land. An air force uses airplanes and other machines that travel through the air. |
| airmail |
to send by air rather than by land or sea. [1/5 definitions] |
| airport |
a large area of level land where airplanes can land and take off. |
| airstrip |
a landing strip or cleared area where aircraft land or take off; runway. An airstrip usually is not paved and does not have the workers or equipment of an airport. |
| Alberta |
Alberta is one of the ten provinces of Canada. A province is an area of land that is one part of a country. Each province has its own capital. |
| 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. |
| Amazon |
When we talk about "the Amazon," we are talking about the Amazon River in South America, or the land region around the Amazon River. The Amazon is one of the longest rivers in the world. It flows across the upper part of South America. The region around the Amazon River is mainly rainforest, but parts of it have been cleared for raising cattle or farming. |
| amphibian |
a small animal that spends part of its life cycle in water and part of its life cycle on land. Amphibians hatch in water and breathe with gills. Then they develop lungs so the adults can breathe air. Amphibians are cold-blooded animals with skeletons inside their bodies. Frogs, toads, and salamanders are amphibians. [2 definitions] |
| amphibious |
able to live both on land and in water. [2 definitions] |
| antarctic |
(capitalized) the region surrounding the South Pole, including the Southern Ocean and the land mass of Antarctica (preceded by "the"). [1/2 definitions] |
| Antarctica |
Antarctica is one of the seven largest areas of land on the earth. These areas of land are called continents. The continent of Antarctica is very cold all year round. |
| army |
a large group of soldiers trained to use weapons to fight on land. [1/3 definitions] |
| artillery |
large weapons used in land battles, such as cannons or rockets. Artillery is too heavy for a person to carry and is sometimes mounted on wheels. [1/2 definitions] |
| ashore |
on land. [1/2 definitions] |
| Asia |
Asia is one of the seven largest areas of land on the earth. These areas of land are called continents. Asia is the largest of all the seven continents on our planet. Many different languages are spoken in Asia. Some of them are Chinese, Japanese, Hindi, Bengali, Farsi, and Arabic. |
| Australia |
Australia is a country but it is also a continent. A continent is one of the seven largest areas of land on the earth, like North America, Africa, or Asia. Most continents are made up of many countries, but Australia is both a continent and a single country. Australia is famous for its unusual animals, such as the kangaroo and the koala. These animals only live in Australia except if they live in a zoo. Australia is the smallest of all the continents, but it is still very large! [1/2 definitions] |
| Bangladesh |
Bangladesh is a country in Asia. Its neighbors are India and Burma, and it is on the coast of the Indian Ocean. People in Bangladesh speak the Bengali language like many of the people in the northern part of India. The great Brahmaputra River flows through Bangladesh. Sometimes Bangladesh has powerful storms, and the river floods the land around it. |