rotation axis

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noun Crystallography.

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.

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Also called axis of symmetry, symmetry axis of rotation.

Compare symmetry element.

Origin of rotation axis

First recorded in 1900–05

Words nearby rotation axis

rotating, rotation, rotational molding, rotational nystagmus, rotational quantum number, rotation axis, rotation flap, rotation-inversion axis, rotation of axes, rotation vector, rotative

How to use rotation axis in a sentence

Following one week of “R&R,” the team will spend one more six-week rotation in the ETU before entering a three-week isolation.
$10,000 a Month for Ebola Fighters|Abby Haglage|October 7, 2014|DAILY BEAST
This could shift global media decision-making from its familiar New York-Los Angeles axis to the Bay Area.
Battle of the Upstarts: Houston vs. San Francisco Bay|Joel Kotkin|October 5, 2014|DAILY BEAST
Six years later, after one more dance with FDR, Kansans returned to their normal political axis.
A Loss by Pat Roberts in Kansas? Actually, Not So Bizarre|Jeff Greenfield|October 3, 2014|DAILY BEAST
"Palmer always keeps his word," beamed Weaver, putting the right hander back in the rotation.
Will the Real Jim Palmer Please Stand Up|Tom Boswell|September 27, 2014|DAILY BEAST

Others who will join the rotation include Alan Alda, Candice Bergen, Stacy Keach, and Carol Burnett.
Fall Broadway Preview: 'This Is Our Youth,' Bradley Cooper as ‘The Elephant Man,' and More|Janice Kaplan|September 11, 2014|DAILY BEAST
The long axis of the hip-roof crystal is often so shortened that it resembles the envelop crystal of calcium oxalate.
A Manual of Clinical Diagnosis|James Campbell Todd
Cassini observed, by the position of certain spots, the revolution of the planet Venus on its axis.
The Every Day Book of History and Chronology|Joel Munsell
The special application of these facts must be reserved till we come to treat of the rotation of crops.
Elements of Agricultural Chemistry|Thomas Anderson
The same would be the case if the polar axis of one sphere stood precisely at right angles to that of the other.
Outlines of the Earth's History|Nathaniel Southgate Shaler
Thus the wide habitability of the earth is an effect arising from the inclination of its polar axis.
Outlines of the Earth's History|Nathaniel Southgate Shaler