1. An area or space without bounds or limits; a territory that extends indefinitely
The mathematician studied the properties of an infinite region in the complex plane.
O matemático estudou as propriedades de uma região infinita no plano complexo.
2. In mathematics and physics, a domain or space that has no finite boundary or endpoint
The integral was calculated over an infinite region.
A integral foi calculada sobre uma região infinita.
3. Metaphorically, something vast, boundless, or seemingly endless in extent
The desert stretched out like an infinite region before the travelers.
O deserto se estendia como uma região infinita diante dos viajantes.