paraboloid

"The train tracks are two parallel lines that run through the entire town. "

"The perpendicular to the wall supported the shelf. "

"The student revolution at the high school led to significant changes in the dress code. "

"My sister is very helpful, especially when it comes to organizing things. "

"The smooth surface of the kitchen table was perfect for setting the dinner plates. "

"The water from the sprinkler followed a parabola as it sprayed across the lawn. "

"The carpenter carefully cut a section from the large log to use for the firewood. "

"I have to focus on my work."

"The graph of the equation y = x² is a simple parabolic. "

"A spent upper stage is a derelict satellite."

"The teacher sent a circular announcing the upcoming school trip. "

"The astronomer pointed out the elliptical galaxy in the night sky. "