1. relating to or forming the base or foundation of something
The basal layer of the skin is the deepest layer.
A camada basal da pele é a camada mais profunda.
2. relating to or denoting a rate or level that is standard or minimum
The basal metabolic rate is the minimum amount of energy needed at rest.
A taxa metabólica basal é a quantidade mínima de energia necessária em repouso.
3. in botany, relating to or situated at the base of a plant or organ
The basal leaves are the ones closest to the root.
As folhas basais são as mais próximas da raiz.