Expansion (noun)

1. An increase in size, number, volume, or scope.
2. The process of becoming larger, wider, or greater in extent or scale.
3. The process of spreading out from a central point or location.

Origin:

Late 16th century: from latin expansio(n-), from expandere "spread out".

Examples:

1. The company has plans for further expansion into new markets.
2. The rapid expansion of the city resulted in urban sprawl.
3. The universe is thought to be in a state of continual expansion.
4. The expansion of the railway network has greatly improved access to remote areas.
5. The expansion of the museum will provide more space for exhibitions and educational programs.