hemisphere
semiesfera
half of a sphere, cut through its center.
Example
A bowl shaped like a hemisphere with radius 3 in holds \tfrac{2}{3}\pi(3)^3 = 18\pi \approx 56.5\text{ in}^3.
In Spanish
semiesfera — la mitad de una esfera, cortada por el centro.
Un tazón en forma de semiesfera de 3 in de radio tiene una capacidad de \tfrac{2}{3}\pi(3)^3 = 18\pi \approx 56.5\text{ in}^3.