Definition of triangular in English:



  • 1Shaped like a triangle; having three sides and three corners.

    ‘dainty triangular sandwiches’
    • ‘Bat rays have a flattened, triangular shaped body that is wider than long.’
    • ‘The garage is 33 feet by 33 feet so it features four equally steep, equally triangular sides meeting in a perfect central peak 33 feet above the ground.’
    • ‘During the year, cigar, rectangular, and triangular shaped objects in the sky were reported from various locations.’
    • ‘I have recently in the last year to year and a half noticed I have on my right shin bone, a perfect triangular shaped scar.’
    • ‘Products with a square, rectangular, triangular, or polygonal cross-section can have corners rounded along their whole length.’
    • ‘Two triangular shaped plastic latches extrude from the side.’
    • ‘One was wearing all red and had a white, circular shaped hat on, while the other was wearing all yellow and had a yellow, triangular shaped hat on.’
    • ‘The decrescent side is flat and triangular in shape and it does not expand outwardly as much as the other three sides.’
    • ‘It was a flying triangular shaped thing with big red lights on the three corners that had a haze like glow to them.’
    • ‘It is a triangular shaped cloth of saffron colour (some earlier sources mention blue colour).’
    • ‘Heterozygotes have a clearly smaller eye with a distinctive triangular shaped pupil.’
    • ‘On either side of the headband, just behind her ears are triangular shaped ornaments of sorts.’
    • ‘The glass pavilion, designed by Dirk van Pastel, is in the western corner of a triangular site, surrounded by the woods and fields of Burgundy.’
    • ‘With triangular occluders, the sides of the rotating shape seem to cave in.’
    • ‘It had a smooth carapace, like a beetle, and a triangular shaped head with two huge bug eyes atop each corner.’
    • ‘On one corner of the triangular table a small grouping of food platters had been placed, and the guests headed to them eagerly.’
    • ‘The style may be named after the farm animal, but that doesn't mean you should also don a triangular shaped goatee on your chin - a definite fashion faux pas.’
    • ‘The decrescent side is a triangular surface, similar to a pyramidal facet.’
    • ‘The florets touched each other at their tips, creating flattened sides and triangular openings between them.’
    • ‘The sagacious Romans saw that in order to control the line of the Danube and the east coast of Italy it was necessary to absorb the triangular shaped country of the Illyrians.’
    three-sided, three-cornered, triangle-shaped
    trigonal, trigonous, trigonic
    View synonyms
    1. 1.1Involving three people or parties.
      ‘a triangular cricket competition’
      • ‘Their relationship parallels any triangular situation, for even in denial their bond is inexplicable.’
      • ‘Development of personal triangular relationships can cause some anxiety.’
      • ‘During Vajpayee's visit, China raised the prospect of a triangular relationship between Russia, China and India.’
      • ‘Likewise, a vernacular translation would normally be produced in a triangular relationship with at least two other versions.’
      • ‘South Africa meet New Zealand in the last league match of the Singapore Challenge 2000 triangular cricket series today, which will determine who gets to play in the final.’
      • ‘Many of the relationships were distinctly triangular.’
      • ‘Their triangular relationship, revealed through charming bilingual interplay, was the heart of this film.’
      • ‘They believe in the mystery of his ways, as well as the absolutely necessary triangular relationship of God-universe-science.’
      • ‘And what will private energy generators make of this proposed triangular relationship between two state firms and one government department?’
      • ‘Make a difference in the triangular relationship.’
      • ‘Taiwan could regain some momentum in the Taipei-Tokyo-Beijing triangular relationship by forming a partnership with Japan to contain China's ambitions in the region.’
      • ‘South Africa drew first blood in this summer's Standard Bank triangular cricket series when they beat Zimbabwe by six wickets at the Wanderers last night.’
      • ‘Without raising a sweat, South Africa crushed Kenya by seven wickets at Willowmoore Park here yesterday in the second one-day triangular cricket international.’
      • ‘For one, slave hiring provided flexibility within the slave system that yielded benefits for all parties involved in the triangular relationship.’
      • ‘In fact, Beijing has long been the most important player in the India-Pakistan-China triangular relationship.’
      • ‘Stone Reader explores the triangular relationship between a book, its reader, and the other people who have shared the experience of reading it.’
      • ‘Resonant triangular relationships evolve between you and your special friend and those below that see you.’
      • ‘Now companies have made it a triangular relationship.’
      • ‘The Samoans booked their place with a 31-13 win over Tonga in Apia to move to the top of the triangular Oceania qualifying competition.’
      • ‘Now they find themselves thrust yet again into an intense triangular relationship: Jimmy the avenger, Sean the truth-seeker and Dave the unfortunate.’
    2. 1.2(of a pyramid) having a three-sided base.
      • ‘The bonds between the central nitrogen and the three surrounding hydrogen atoms are pointed at the corners of the base of a triangular pyramid.’
      • ‘Built by the widow of Sir William James in 1784, the triangular tower is a memorial to her husband, who fought a battle against pirates in 1755 when he captured Severndroog in India.’
      • ‘Instead of collapsing on top of them, the walls had fallen together in a triangular structure and were supporting several large boulders that had been the roof of the cave.’
      • ‘Alternatively, the door jam looks very similar to any regular triangular door jam and is put very close to the closed door.’
      • ‘One of the girls had been to New York before, and fairly expertly navigated us to a tiny gay piano bar set in a tiny triangular building created by the intersection of gridlines.’
      • ‘Onto this stage is rolled a triangular cage for the important prison scenes, the widely spaced bars forming a jungle gym for the captive Palamon.’
      • ‘It is a 2.5 m triangular pyramid with an inscription written in Bulgarian, Greek and Turkish which reads, ‘We stand united on the path to a united Europe’.’


Mid 16th century: from late Latin triangularis, from Latin triangulum (see triangle).