1. A recently established or emerging area of economic activity, industry, or business
The technology sector is a new sector that has grown rapidly in recent decades.
O setor de tecnologia é um setor novo que cresceu rapidamente nas últimas décadas.
2. A division or department that has recently been created within an organization
The company established a new sector focused on renewable energy.
A empresa estabeleceu um setor novo focado em energia renovável.