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Lune

Lune is a term with several meanings in language and science. In French, lune means the Moon, Earth’s natural satellite, and the word appears in astronomy, literature, and everyday speech. In English, lune also denotes a geometric shape: a crescent formed by the difference between two circular discs or arcs.

Etymology and usage: The word derives from Latin luna, via Old French lune, reflecting its original association

Geometry: A lune is a plane figure bounded by circular arcs. It is the region between two

Geography: The River Lune is a river in north-west England, flowing through Cumbria and Lancashire and passing

Other uses: Lune can appear as a surname or in place names in various languages, but its

with
the
Moon.
The
geometric
sense
is
named
for
its
crescent-like
appearance
and
is
used
in
discussions
of
plane
geometry
and
area.
arcs
that
intersect,
producing
a
crescent-like
shape.
The
study
of
lunes
has
a
historical
note
of
importance:
Hippocrates
of
Chios
showed
that
some
lunes
could
have
areas
equal
to
a
triangle,
illustrating
a
surprising
connection
between
curved
and
straight
figures
and
contributing
to
early
geometric
theory.
the
city
of
Lancaster.
Its
valley
is
known
as
the
Lune
Valley,
a
feature
of
the
region’s
landscape
and
history.
primary
contemporary
references
are
the
Moon
in
French,
the
geometric
lune
in
mathematics,
and
the
English
river
Lune.
The
term
is
rarely
used
as
a
standalone
English
noun
outside
these
contexts.