English Wikipedia - The Free Encycl...
Download this dictionary
Annulus (mathematics)
In
mathematics
, an
annulus
(the
Latin
word for "little ring", with plural
annuli
) is a ring-shaped object, especially a region bounded by two concentric circles. The adjectival form is
annular
(as in
annular eclipse
).
See more at Wikipedia.org...
© This article uses material from
Wikipedia
®
and is licensed under the
GNU Free Documentation License
and under the
Creative Commons Attribution-ShareAlike License