concave

It only uses 1.0 gpf, with the help of two strong jets concealed in a concave rim beneath the seat that create a strong swirl during the flush.

From Slate ● Feb. 25, 2025

“My chest was concave trying to pull in breath.”

From BBC ● Oct. 10, 2024

It was a little bit concave, like a bowl.

From Science Daily ● Dec. 7, 2023

On the top and bottom of the cylinder, the metal had been pushed up in a concave shape, thrust out from pressure on the inside.

From Los Angeles Times ● Aug. 3, 2023

In an unobstructed sky the clouds seem more massive, sometimes grandly reflecting the earth’s curvature on their concave undersides.

From "Into the Wild" by Jon Krakauer

In the second book of his Dark Star trilogy, James coaxes beauty from dark thoughts, leaving readers with a concaved, mystical and African-inspired world that begins in free-fall.

From Los Angeles Times ● Feb. 15, 2022

The beach is about 10 yards wide and 350 to 400 feet long and it runs into a slightly concaved, grassy slope that rises gently to a height of a hundred feet.

From The Story of the Great War, Volume III (of 8) History of the European War from Official Sources by Francis J. (Francis Joseph) Reynolds

Dorsal fins of this species may also be rounded on the tip but all are sharply concaved on the rear margin.

From Whales, Dolphins, and Porpoises of the Western North Atlantic A Guide to Their Identification by David Caldwell

San Francisco’s magnificent municipal building had concaved like an egg shell.

From Complete Story of the San Francisco Horror by Richard Linthicum

The flukes are broad, concaved on the rear margin, and deeply notched.

From Whales, Dolphins, and Porpoises of the Western North Atlantic A Guide to Their Identification by David Caldwell

The world below looked like a vast, shallow bowl, the sides concaving upwards around him to the horizon.

From Hoof and Claw by Sir Charles George Douglas Roberts