expand

US /ɪkˈspænd/
UK /ɪkˈspænd/
"expand" picture
1.

to increase in size, number, or importance, or to make something increase in this way

:
The business plans to expand into new markets next year.
Water expands when it freezes.
2.

to give a fuller version or more details of an account or idea

:
Could you please expand on that point?
The author decided to expand the short story into a novel.