They may be semi-circular, segmental, elliptical, stilted, horse-shoe, pointed, trefoiled, cinquefoiled, or ogee.
"Our Homeland Churches and How to Study Them"
Sidney Heath
In the northern chamber the vault is kept low and segmental, on account of the passage above it of the dorter stair to the church....
"The Care of Books"
John Willis Clark
Remove existing segmental-top two-storey windows at sides of building.
"The Fairfax County Courthouse"
Ross D. Netherton Ruby Waldeck