verb

1. To change (something) from a smaller form and/or size to a larger one; to spread out or lay open.

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

2. To increase the extent, number, volume or scope of (something).

   “A flower expands its leaves.”

3. To express (something) at length and/or in detail.

Synonyms: spread, spread out, unfold, elaborate, enlarge