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longitudo

Longitudo is a Latin noun meaning length or extent, especially the linear dimension of an object along its principal axis. In classical and medieval Latin it is used to denote the distance between endpoints of a straight line or the measure of an object's extent along one dimension. It is closely related to latitudo (breadth or width) and altitudo (height or depth). The term comes from longus “long” with the abstract-noun suffix -tudo.

In geometry and measurement, longitudo appears in descriptions of figures such as segments, lines, or solids

In historical Latin writings longitudo also served to translate the modern concept of length across disciplines,

See also longitudinal, latitudo, altitudo, diameter, radius.

where
a
single
linear
dimension
is
being
specified.
For
example,
the
longitudo
of
a
rectangle
would
be
the
length
of
one
of
its
sides.
In
geography
and
astronomy,
longitudo
is
used
for
longitude,
the
angular
distance
east
or
west
of
a
prime
meridian;
latitudo
is
latitude.
including
biology
(the
length
of
anatomical
features),
architecture,
and
cartography.
In
modern
usage,
longitudo
is
encountered
mainly
in
linguistic,
philological,
and
historical
contexts,
or
in
scholarly
Latin
texts
discussing
geometry
or
geography.
In
contemporary
Romance
languages,
descendants
such
as
Spanish
longitud,
Italian
lunghezza,
French
longueur,
and
Portuguese
longitude
trace
their
etymology
to
longitudo.