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ringförmig

Ringförmig is a German adjective meaning ring-shaped or annular. It is formed from the word ring (circle) and the suffix -förmig, which indicates form or shape. The term is used across disciplines to describe objects or patterns that form a closed loop around a central area, often with a hollow interior or a distinct circular boundary.

In geometry and mathematics, ringförmig describes shapes like an annulus, a region between two concentric circles.

In biology and medicine, ringförmig is used to characterize structures or patterns that encircle an opening

In astronomy, ringförmig commonly describes phenomena such as the ringförmige Sonnenfinsternis (annular solar eclipse), where the

See also: annulus, annular, torus, circular.

Such
forms
are
contrasted
with
solid
disks
that
have
no
hole
in
the
center.
The
concept
also
appears
in
descriptions
of
objects
that
resemble
a
ring
in
cross-section
or
outline.
or
form
a
circular
ring
on
a
tissue
surface.
Examples
include
ringförmige
Muskelstrukturen
(sphincters)
around
ducts
or
openings,
and
ringförmige
Hautveränderungen
or
Läsionen
in
dermatology,
which
describe
annular
or
circular
skin
changes.
Moon
covers
the
center
of
the
Sun
but
leaves
a
bright
ring
along
the
edge.
The
term
also
appears
in
popular
descriptions
of
ring
galaxies,
which
show
a
ring-shaped
distribution
of
stars
around
a
galactic
core.