an oblique-angled parallelogram with only the opposite sides equal.
Anatomy. rhomboideus.
Also, rhomboidal. having a form like or similar to that of a rhombus; shaped like a rhomboid.
a parallelogram having adjacent sides of unequal length
having such a shape

rhomboid rhom·boid (rŏm’boid’) or rhom·boi·dal (rŏm-boid’l)
Resembling a parallelogram having unequal adjacent sides.
A parallelogram with unequal adjacent sides.

rhomboid, rhomboidal adjective
Plural rhombuses or rhombi (rŏm’bī)
A parallelogram with four equal sides; an equilateral parallelogram.

rhomboid, rhomboidal adjective

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