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. |
about |
on all sides; here and there. [1/8 definitions] |
accepted |
When you feel accepted, you feel that people around you approve of you. People in your group think you're OK, and you can feel comfortable with them. [1/2 definitions] |
activity |
When there is a lot of activity somewhere, it means that there are a lot of people or animals moving around and doing things. [1/3 definitions] |
agitation |
the act or process of stirring up something, forcing it to move around or back and forth. [1/2 definitions] |
alert |
When you are awake and watching everything around you carefully, you are alert. When you are alert, you can act quickly if you need to. [1/3 definitions] |
alien |
If people treat you like an alien, they treat you like you are not part of their group. If you feel like an alien, you feel like you don't fit in with the people around you. [1/5 definitions] |
alligator |
An alligator is a large, powerful reptile that lives in and around water. An alligator has a long body and tail, but it has short legs. It also has a long snout and many sharp teeth. |
all-round |
all-around. |
amoeba |
a tiny living thing made of only one cell. Amoebas move by changing their shape. They eat by wrapping their bodies around their food. Amoebas live in fresh and salt water, soil, and in animals. Most kinds of amoebas can only be seen through a microscope. |
among |
When you are among people, you are part of their group or they all around you. [1/5 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. [1/2 definitions] |
approximately |
If you get home at approximately four o'clock, it means you get home around four o'clock. You might get there a few minutes before or after four, but the time you get there is near four. If it's approximately two miles from your home to your school, the distance from your home to your school is about two miles. It could be a little more or a little less. |
arctic |
(often capitalized) of or having to do with the region around the North Pole. [2/3 definitions] |
Arctic Circle |
an imaginary line drawn around the earth parallel to the equator which marks the boundary of the Arctic. North of this line there are periods of continuous night in the winter and continuous day in the summer. |
area |
An area is a part of space. When we imagine an area, we think of some space with a line around it. A town is an area. A garden is an area. Rooms are areas in a house. Very often, one area is part of a larger area. [1/3 definitions] |
around |
in a circle. [11/12 definitions] |
asparagus |
Asparagus is a green plant that people eat as a vegetable. People usually eat the young plants when they come up from the ground and are around eight to ten inches tall. These plants are shaped something like spears. |
aster |
a plant with white, pink, blue, or purple flowers. The flowers are made up of many narrow petals around a yellow center. |
asteroid |
Asteroids are chunks of rock that travel around the sun in the same way as planets travel around the sun. Asteroids can be as big as 600 miles across or as small as a single piece of dust. Most asteroids are found between the orbits of the planets Jupiter and Mars. |
atmosphere |
All around the planet Earth are gases. These gases all together are called Earth's atmosphere. As our planet travels through space and around the sun, its atmosphere stays with it. Other planets can have an atmosphere too, but Earth's atmosphere has just the right mixture of gases for humans to live. Our atmosphere lets us breathe and also protects us from the strong energy of the sun. [1/2 definitions] |