1. extend in one or more directions

- The dough expands

Definition categories: motion, grow

2. become larger in size or volume or quantity

- his business expanded rapidly

Definition categories: change, grow

3. make bigger or wider in size, volume, or quantity

- expand the house by adding another wing

Definition categories: change, enlarge

4. grow vigorously

Similar word(s): boom, flourish, thrive

Definition categories: change, grow

5. exaggerate or make bigger

Similar word(s): amplify, inflate

Definition categories: change, increase

6. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Similar word(s): dilate, elaborate, enlarge, expatiate, exposit, expound, lucubrate

Definition categories: communication, clarify, elucidate

7. expand the influence of

Similar word(s): extend

Definition categories: change, alter, modify

Sentences with expand as a verb:

- You can expand this compact umbrella to cover a large table.

- A flower expands its leaves.

- Use the binomial theorem to expand

- Many materials expand when heated.

- This compact umbrella expands to cover a large table.

- He's so pedantic, he expands on everything!