expand Definition

expand
verb expanded, expanding

tr & intr
1. To make or become greater in size, extent or importance.

Thesaurus: grow, increase, multiply, enlarge, amplify, widen, heighten, lengthen, magnify, inflate, elaborate, embellish.
intr
2. formal
To become more at ease or more open and talkative.
tr & intr
3. formal
To fold out flat or spread out.
4. To write something out in full.
5. math.
To multiply out (terms in brackets).

Derivative: expandable
adj

Etymology: 15c: from Latin expandere, expansum to spread out.

Phrasal Verb: expand on or upon something

To give additional information; to enlarge on (a description, etc).