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A-axis

American

[ey-ak-sis] / ˈeɪˌæk sɪs /

noun

Crystallography.

the horizontal crystallographic axis passing from front to back.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.