Look-up History
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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| airplane |
1 |
today |
a machine that can fly because of the force of air upon its wings; plane. An airplane is driven by propellers or a jet engine. |
Kids |
Int. |
| ecosystem |
1 |
today |
a community of living things, together with their environment. |
Kids |
Int. |
| electricity |
1 |
today |
energy caused by the movement of electrons through matter. [3 definitions] |
Kids |
Int. |
| flower |
1 |
today |
the part of a plant that has petals and that makes fruit or seeds; blossom. Flowers often have a pleasant smell. [3 definitions] |
Kids |
Int. |
| blood |
1 |
today |
the red liquid containing oxygen and nutrients that pumps through the veins and arteries of humans and many other animals. [2 definitions] |
Kids |
Int. |
| reptile |
1 |
today |
a cold-blooded animal with a skeleton inside its body and dry scales or hard plates on its skin. Most reptiles lay eggs with soft, leathery shells. Some kinds of reptiles live in water, but use their noses to breathe air into their lungs. Lizards, turtles, snakes, and crocodiles are kinds of reptiles. Most reptiles have short legs, but snakes creep on the ground without legs. |
Kids |
Int. |
| endangered species |
1 |
today |
a species of plant or animal that is in danger of becoming extinct. |
Kids |
Int. |
| life |
1 |
today |
the state of being that sets animals and plants apart from rocks, minerals, and other things that are not alive. Things that have life grow, reproduce, and use energy. [7 definitions] |
Kids |
Int. |
| plant |
1 |
today |
one of a large group of living things that use sunlight to make their own food. Most plants have leaves, stems, roots and either flowers or cones. Plants use a green pigment called chlorophyll to absorb energy from sunlight. Grasses, trees, vines, vegetables, cactuses, ferns and mosses are plants. [5 definitions] |
Kids |
Int. |
| body |
1 |
today |
all the physical material that makes up a person or animal, including limbs, organs, tissue, and other parts. [5 definitions] |
Kids |
Int. |