noun, plural an·nu·li [an-yuh-lahy] /ˈæn yəˌlaɪ/, an·nu·lus·es.
Origin of annulus
Examples from the Web for annuli
Historical Examples of annuli
But in that group (Cystobranchus) there may be as many as eight annuli.
Abdomen black, consisting of seven annuli or rings, besides the tail part, the last of which is edged with orange.
This phrase is somewhat obscure: "annuli ferrei sicut solebat fieri in cista Norensi."
An eye-like spot in the Wings of many Lepidoptera, consisting of annuli of different colours, inclosing a central spot or pupil.An Introduction to Entomology: Vol. IV (of 4)
This corresponds to the usual presence (in the Rhynchobdellidae) of three annuli to each segment.
noun plural -li (-ˌlaɪ) or -luses
Word Origin for annulus
1560s, medical, from misspelling of Latin anulus "little ring, finger ring," a diminutive of anus (see anus).