basion

== English == === Etymology === From New Latin, equivalent to basi- (“base”) +‎ -ion (“cephalometric reference point”). === Noun === basion (plural basions) (anatomy) The middle of the anterior margin of the foramen magnum of the skull. 2010, John P. Dormans, Ejovi Ughwanogho, & Jaimo Ahn, "Pediatric Spine Trauma", Chapter 12 in Behrooz A. Akbarnia, Muharrem Yazici, & George H. Thompson (eds.) The Growing Spine: Management of Spinal Disorders in Young Children, page 138 The tectorial membrane limits extension, while odontoid impaction on the basion limits flexion. ==== Derived terms ==== ==== Translations ==== === References === === Anagrams === Bosnia, bonsai, sabino