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basion

American  
[bey-see-on, -zee-] / ˈbeɪ siˌɒn, -zi- /

noun

Craniometry.

  1. the midpoint of the anterior margin of the foramen magnum.

basion British  
/ ˈbeɪsɪən /

noun

  1. anatomy the midpoint on the forward border of the foramen magnum

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of basion

1875–80; < New Latin < Greek bás ( is ) ( basis ) + -ion noun suffix

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.