1. The zone of a coast, especially the part between the highest and lowest watermarks
The littoral region is home to diverse marine ecosystems.
A região litorânea abriga diversos ecossistemas marinhos.
2. The area of land adjacent to or near the shore of a sea, ocean, or lake
Tourism development in the littoral region has increased significantly.
O desenvolvimento do turismo na região litorânea aumentou significativamente.