Look-up History
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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| virus |
1 |
today |
a tiny organism that can reproduce only in living cells. Viruses cause disease in humans, animals, and plants. [3 definitions] |
Kids |
Ch. |
| muscle |
1 |
today |
tissue in the body of animals and humans that moves parts of the body. Muscle is made up of bundles of fibers that move the body by tightening and relaxing. [3 definitions] |
Kids |
Ch. |
| mountain |
1 |
today |
a land mass with great height and steep sides that is higher than a hill. [2 definitions] |
Kids |
Ch. |
| organ |
1 |
today |
a musical instrument with a keyboard. It is played by pressing keys attached to a device that forces air through pipes. [3 definitions] |
Kids |
Ch. |
| celebration |
1 |
today |
the act of honoring or celebrating. [2 definitions] |
Kids |
Ch. |
| transportation |
1 |
today |
the act of carrying or moving something. [2 definitions] |
Kids |
Ch. |
| 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 |
Ch. |