concentric

For that project, the engineers patterned a gel disk with grooves extending outward from its center and forming concentric circles.

From Science Daily ● Oct. 23, 2026

The monitor had been designed with screws in the back that had 25 concentric circles machined into their flat heads to make them sparkle as light passed over them.

From Barron's ● Apr. 22, 2026

After doffing their shoes, presumably to protect the plush, vibrantly red carpet that covers the theater’s floor, audience members take seats arranged in concentric circles.

From The Wall Street Journal ● Jan. 22, 2026

In later scenes, when the Shakers are established and actively recruiting in America, the worshipers march in straight lines and concentric circles, all while lightly tapping their shoulders, crossing their arms and looking straight ahead.

From Los Angeles Times ● Dec. 2, 2025

In its death throes, the Sun will slowly pulsate, expanding and contracting once every few millennia, eventually spewing its atmosphere into space in one or more concentric shells of gas.

From "Cosmos" by Carl Sagan