What is this figure called? It looks like a filled half parabola.

[Dr. T]

Hi!

For a geometric abstraction, I created this figure using a graphics application.

It looks like a filled half parabola. What is it called?

Thank you!

Dr. T

 

[Dr.Peterson]

It looks to me like a semi-ellipse, since the ends of the arc are (approximately) parallel.

If it is part of a parabola, it would be called a segment of a parabola.