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annulus plural

an·nu·lus

The plural form of annulus is annuli

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Definitions

  • noun plural annulus a ring; a ringlike part, band, or space. 1
  • noun plural annulus Geometry. the space between two concentric circles on a plane. 1
  • noun plural annulus the veil remnant on a mushroom stalk. 1
  • noun plural annulus a growth ring, as on the cross section of a tree trunk, that can be used to estimate age. 1
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