Spelling Notes
Both "anulus" and "annulus" are acceptable spellings. Gray's Anatomy uses "annulus fibrosus," Terminologia Anatomica uses "anulus fibrosus," and Nomina Anatomica uses both forms. Etymologically speaking, anulus seems to be the correct spelling as it is the diminutive of L. anus, a ring, hence anulus, a little ring.
"Fibrosus" has no correct alternative spelling; "fibrosis" has a different meaning and is incorrect in this context.
Read more about this topic: Annulus Fibrosus Disci Intervertebralis
Famous quotes containing the words spelling and/or notes:
“The old saying of Buffon’s that style is the man himself is as near the truth as we can get—but then most men mistake grammar for style, as they mistake correct spelling for words or schooling for education.”
—Samuel Butler (1835–1902)
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Whose Dirge is whisper’d by the warbling LUTE.”
—John Dryden (1631–1700)