focal
BrE /ˈfəʊ.kəl/ AmE /ˈfoʊ.kəl/
adjective en → es
relating to or forming a center; central, main
central, principal, importante
Collocations focal point · focal issue
-
The focal point of the room is a large painting.
El punto central de la habitación es un gran cuadro.
relating to or being the focus of an optical system, such as a lens or mirror
focal (en óptica)
Collocations focal length · focal plane
-
Adjust the lens to its focal length.
Ajuste la lente a su longitud focal.