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annulus

an·nu·lus

UK/ˈænjʊləs/ US/ˈænjələs/ uncommon

noun

1.

a toroidal shape

  • “a ring of ships in the harbor”
  • “a halo of smoke”
Synonyms
2.

(Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem

Origin

Learned borrowing from Medieval Latin ānnulus, a misspelling of Latin ānulus (“ring, especially one worn on a finger”), from ānus (“ring”) (possibly from Proto-Indo-European *h₁eh₂-n-o- (“ring”), from an uncertain root) + -ulus (diminutive suffix). The plural form annuli is a learned borrowing from Medieval Latin ānnulī.

Phrases

  • annulus fibrosus
  • annulus of Zinn
  • apical annulus
  • attached annulus
  • double annulus
  • mitral annulus
  • single annulus
  • square annulus

Related words

Word family

Broader terms

Narrower terms

Parts

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.