| 5000 Vocabulary List for Visiting Scholars in the USA - Page 382 | |||
| Word | Type | Used in a Sentence | Synonym |
| oral | adj. | They each must pass an oral test. | spoken |
| orange | noun | We each ate an orange. | citrus fruit |
| orbit | noun | The orbit of the earth takes one year. | path |
| verb | The earth orbits the sun. | circles | |
| orchard | noun | They had an orchard of apple trees. | grove |
| orchestra | noun | The orchestra played classical music. | musical band |
| order | verb | We ordered them not to leave. | commanded |
| verb | We ordered 200 books from the store. | purchased | |
| noun | There was an order for six machines. | requisition | |
| noun | The order to march was received today. | directive | |
| noun | Put them in alphabetic order. | sequence | |