One of the mysteries of the English language finally explained.
1A laminated ring of fibrocartilage forming the outer portion of an intervertebral disc, surrounding the nucleus pulposus.
Late 19th century; earliest use found in Michael Foster (1836–1907), physiologist and politician. From scientific Latin annulus fibrosus from post-classical Latin annulus + fibrosus.
annulus fibrosus/ˌanjʊləs fʌɪˈbrəʊsəs/
In this article we explore how to impress employers with a spot-on CV.