a parallelogram having four right angles
Compare rhombus
WordReference Random House Learner's Dictionary of American English © 2025
rec•tan•gle /ˈrɛkˌtæŋgəl/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2025- Mathematicsa four-sided figure with parallel sides, having four right angles:Every square is a rectangle, but not every rectangle is a square.
rec•tan•gle
(rek′tang′gəl),USA pronunciation n.
- Mathematicsa parallelogram having four right angles.
- Medieval Latin rēctangulum, Late Latin rēctiangulum right-angled triangle (noun, nominal use of neuter of rēctiangulus having a right angle), equivalent. to rēcti- recti- + angulum angle1
- 1565–75
Collins Concise English Dictionary © HarperCollins Publishers::
'rectangle' also found in these entries (note: many are not synonyms or translations):
L-plate
- as
- baguette
- box plot
- brick
- channel
- conjugate axis
- emerald cut
- frame
- golden section
- interval
- keyhole
- oblique circular cylinder
- oblong
- parallelogram
- population pyramid
- quincunx
- rect-
- rectangular
- recti-
- right circular cylinder
- square