Definition of annulus in English:

annulus

Syllabification: an·nu·lus
Pronunciation: /ˈanyələs
 
/

noun (plural annuli /-ˌlī/)

technical
  • A ring-shaped object, structure, or region.
    More example sentences
    • Channel incorporation was typically achieved within a few minutes after ‘brushing’ the membrane fraction across the annulus with fresh lipids to form a new bilayer.
    • The tympanic annulus must be completely visible.
    • The fibrillar collagens also change across the disc, with the nucleus containing only type II collagen while both types I and type II are found in the annulus.

Origin

mid 16th century: from Latin anulus, annulus.

More definitions of annulus

Definition of annulus in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space