1. to increase the range, scope, or accessibility of something that can be obtained or accessed
The company plans to expand availability of its products to rural areas.
A empresa planeja expandir a disponibilidade de seus produtos para áreas rurais.
2. to make something more widely obtainable or accessible
We need to expand availability of the service to new markets.
Precisamos expandir a disponibilidade do serviço para novos mercados.