triangledadj.
/ˈtrʌɪaŋɡ(ə)ld//trʌɪˈaŋɡ(ə)ld/ a. Three-cornered, triangular. Obsolete.
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the world > space > shape > angularity > specific angular shape > [adjective] > triangular
three-corneredc1400
three-squaredc1400
three-squarec1450
triangle1474
triangled1486
triangular?1541
three-corner1548
trilater1570
trigonal1571
three-corned1584
three-sided1601
triangulated1610
triangulate1611
triform1621
triangulary1622
triquetrous1658
trilateral1660
triagonal1665
trigonic1788
cocked hat1846
heater-shaped1847
the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > triangular
triangle1474
triangled1486
triangular?1541
trigonal1570
trilater1570
triangulated1610
triangulate1611
triform1621
triangulary1622
triquetrous1658
trilateral1660
trilineal1715
trilinear1715
trigonic1788
trigonate1815
triagonal1831
1486 Bk. St. Albans, Her. e v Euery body triangulit is moore of lengthe then of brede and naamly conyt.
a1505 in C. L. Kingsford Chron. London (1905) 250 A Cupbourde of 6 stages height, beyng Tryangled.
1570 H. Billingsley tr. Euclid Elements Geom. xi. f. 314 If the base of a Pyramis be a triangle, then is it called a triangled Pyramis.
1613 R. Zouche Dove 24 Triangl'd Sicily.
1688 R. Holme Acad. Armory iii. 293/2 There are Round, Square, Triangled,..many cornered,..Pies.
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1603 P. Holland tr. Plutarch Morals 796 It [the number of nine] standeth of two triangled numbers, to wit, a senarie and a ternarie.
2. Arranged in a triangle; situated at the angular points of a triangle. ? Obsolete.
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the world > space > relative position > arrangement or fact of being arranged > other specific arrangements > [adjective] > other spec.
quincuncial1601
triangled1610
squared1667
dot-and-dash1850
echeloned1857
1610 J. Guillim Display of Heraldrie iii. xxii. 167 Fishes are borne..Imbowed, Extended, Endorsed..Fretted, and Trianguled.
1632 W. Lithgow Totall Disc. Trav. iv. 135 In one of these triangled points..standeth the Pallace of the Great Turke.
3. Heraldry. Divided into triangles by crossing lines.
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c1828 W. Berry Encycl. Her. I. Gloss. Triangled and Trianglée, formed into triangles, as indentings point in point.
This entry has not yet been fully updated (first published 1914; most recently modified version published online September 2021).
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adj.1486