concave
US /ˈkɑːn.keɪv/
UK /ˈkɑːn.keɪv/
1.
вогнутый
having an outline or surface that curves inward like the interior of a circle or sphere
:
•
The spoon has a concave shape.
Ложка имеет вогнутую форму.
•
The lens of the telescope is concave.
Линза телескопа вогнутая.