Look-up History
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Show words looked up
Word |
# |
Date |
Definition |
Site |
Level |
| poliomyelitis |
1 |
today |
a disease caused by a virus that attacks the spinal cord and damages the nervous system. Poliomyelitis affects mainly children and can lead to paralysis or deformed limbs. Jonas Salk invented a vaccine that prevents poliomyelitis. |
Main |
Int. |
| rude |
1 |
today |
showing poor manners; not polite. [2 definitions] |
Main |
Int. |
| tread |
1 |
today |
to step or walk on, in, or along. [7 definitions] |
Main |
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] |
Main |
Int. |
| subside |
1 |
today |
to become less; decrease. [2 definitions] |
Main |
Int. |
| shy1 |
1 |
today |
not comfortable with other people. [4 definitions] |
Main |
Int. |
| appear |
1 |
today |
to come into view; become visible. [3 definitions] |
Main |
Int. |
| lesson |
1 |
today |
a period of instruction in a particular thing, or something that is intended to be learned or studied. [2 definitions] |
Main |
Int. |
| tone |
1 |
today |
a single sound that is thought of as having pitch, strength, or length. [7 definitions] |
Main |
Int. |
| birth |
1 |
today |
the act or fact of being born. [3 definitions] |
Main |
Int. |