I. ˈräm-ˌbȯid noun
Etymology: Middle French rhomboïde, from Latin rhomboides, from Greek rhomboeidēs resembling a rhombus, from rhombos
Date: 1570
: a parallelogram with no right angles and with adjacent sides of unequal length
II. ˈräm-ˌbȯid adjective
or rhom·boi·dal räm-ˈbȯi-d ə l
Date: circa 1693
: shaped somewhat like a rhombus or rhomboid