Look-up History
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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| respiration |
1 |
today |
the act of breathing. |
Kids |
Int. |
| geology |
1 |
today |
the study of the physical structure of the earth and how it has changed over time. Geologists gain this knowledge by studying rocks. Some geologists study other planets. [2 definitions] |
Kids |
Int. |
| tax |
1 |
today |
a sum of money paid to a government, which the government uses to pay for its services to the people and to maintain itself. [4 definitions] |
Kids |
Int. |
| arthropod |
1 |
today |
a large group of animals with hard shells on the outsides of their bodies, legs with joints, and no bones inside their bodies. Insects, spiders, centipedes, and crabs are arthropods. |
Kids |
Int. |
| grammar |
1 |
today |
the rules for forming the words and sentences of a language. Some of these rules have to be learned. Other rules are already in the head of a native speaker. For example, a native English speaker would not say, "I a cat bitten by was," because the grammar does not make sense. When one learns a new language, most of the rules of its grammar have to be learned. [2 definitions] |
Kids |
Int. |
| jewelry |
1 |
today |
rings, watches, necklaces, or other ornaments; jewels. |
Kids |
Int. |
| crustacean |
1 |
today |
an aquatic animal with a hard shell and jointed legs. Crustaceans live in fresh or salt water. There are many kinds of crustaceans, including crabs, crayfish, lobsters, and shrimps. Crustaceans are kinds of arthropods. |
Kids |
Int. |
| military |
1 |
today |
having to do with planning, preparing for, or fighting in war. [3 definitions] |
Kids |
Int. |
| care |
1 |
today |
serious attention. [8 definitions] |
Kids |
Int. |
| instrument |
1 |
today |
a tool or mechanical device used for special work. [2 definitions] |
Kids |
Int. |