parallelogram

par·al·lel·o·gram  (pr-ll-grm) n. A four-sided plane figure with opposite sides parallel. [Late Latin paralllogrammum, from Greek paralllogrammon, from neuter sing. of paralllogrammos, bounded by parallel lines : paralllos, parallel; see parallel + gramm, line; see gerbh- in Indo-European roots.]

parallelogram

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parallelogram

Noun

Geom a plane figure whose opposite sides are parallel and equal in length [Greek parallēlos parallel + grammē line]

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parallelogram  (pr-ll-grm)

A four-sided plane figure with opposite sides parallel. Rhombuses and rectangles are parallelograms.

Thesaurus

Noun

1.

parallelogram - a quadrilateral whose opposite sides are both parallel and equal in length quadrangle, quadrilateral, tetragon - a four-sided polygon rhomb, rhombus, diamond - a parallelogram with four equal sides; an oblique-angled equilateral parallelogram rhomboid - a parallelogram with adjacent sides of unequal lengths; an oblique-angled parallelogram with only the opposite sides equal rectangle - a parallelogram with four right angles trapezium - a quadrilateral with no parallel sides