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rotation axis

American  

noun

Crystallography.
  1. an imaginary line through a crystal about which the crystal may be rotated a specified number of degrees and be brought back to its original position.


Etymology

Origin of rotation axis

First recorded in 1900–05

Example Sentences

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Former endeavors had been limited to two-dimensional approaches that assumed the symmetry about the Sun's rotation axis.

From Science Daily Mar. 27, 2024

"Measuring the location of the rotation axis very precisely is really important to the GPS system and so to everyone who uses it, either with a cell phone, flying in an aircraft, etc."

From Salon Jun. 21, 2023

Saturn’s field, on the other hand, is perfectly aligned with its rotation axis.

From Textbooks Oct. 13, 2016

Over time, our orbit twists and flexes under the perturbation of the other planets, and the Earth’s rotation axis nods back and forth.

From Slate Oct. 2, 2013

The lander will carry four instruments, which will determine Mars' rotation axis and measure the seismic waves and heat flowing through and from the planet's interior.

From Scientific American Aug. 21, 2012

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