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Grade 3
e-Glossary
O
List of Words for Letter ‘O’
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ocean
A large body of salt water.
opaque
Not allowing light to pass through.
An ice cream cone is opaque. You can’t see through it.
orbit
The regular path one object travels around another.
Earth’s orbit around the Sun is nearly round.
organism
A living thing.
Koala bears and eucalyptus trees are organisms.