1) Said of two or more things, such as lines or planes, that are equally
distant from one another at all points.
2) Electricity: An arrangement of the components in an electric circuit
so that the same voltage is applied to each component.
Compare → series.

From M.Fr. parallèle, from L. parallelus, from Gk. parallelos
"parallel," from para allelois "beside one another," from → para-
"beside" + allelois "each other," from allos "other,"
→ alias.

Parâsu, from parâ-, → para-, + su
"direction, side," from Mid.Pers. sôk "direction, side."

parallel axis theorem

فربین ِ آسههای ِ پراسو

farbin-e âsehâ-ye parâsu

Fr.: théorème des axes parallèles

The → moment of inertia of a body about any given axis
is the moment of inertia about a parallel axis through the center of mass, plus the
moment of inertia about the given axis if the mass were located at the center of mass.
same as → Steiner's theorem.

A solid figure whose six bases are → parallelograms,
opposite pairs being identical and parallel.

From Gk. parallelepipedon, from parallelos,
→ parallel + epipedon "plane surface," from neuter of
epipedos "flat," from → epi- +
pedon "ground," cognate with L. ped-, pes,
→ foot.

A four-sided → polygon whose opposite sides are parallel.
A parallelogram all of whose angles are right angles is a
→ rectangle.

From Fr. parallélogramme, from L. parallelogrammum, from
Gk. parallelogrammon "bounded by parallel lines," from parallelos,
→ parallel, + gramme "line," related to
graphein "to write, draw" → -graph.

Parâsubar, from parâsu, → parallel, +
bar, → side.

plane-parallel atmosphere

هواسپهر ِ پراسو-تخت، جو ِ ~

havâsepehr-e parâsu-taxthâ, javv-e ~

Fr.: atmosphère plan-parallèle

An approximation used in many stellar atmosphere models that depict the
atmosphere as being only one-dimensional and bounded at the top and
bottom by horizontal plane surfaces
normal to the direction of gravity.