triangular
adjective
tri·an·gu·lar
trī-ˈaŋ-gyə-lər 
1
a
: of, relating to, or having the form of a triangle
a triangular plot of land
b
: having a triangular base or principal surface
a triangular table
a triangular pyramid
2
a(1)
: of, relating to, or involving three elements
a triangular agreement
(2)
of a military group
: based primarily on three units
b
: of or relating to a love triangle
Examples of triangular in a Sentence
Recent Examples on the Web
There were plates of triangular sandwiches, scones, cake.
—
Anne Enright, New Yorker, 27 July 2025
Orange doors, geometric balconies and triangular chimneys: these are some of the features that distinguish the mid-century modern houses designed by architect Don Tosi.
—Carolyn Stein, Chicago Tribune, 23 July 2025
These fossils indicate that the tiny creatures had hair-like extensions on triangular grooves around their mouths.
—Jack Knudson, Discover Magazine, 23 July 2025
For example, problem one asks students to imagine a triangular grid of dots (like a triangular pegboard) and figure out how to cover all the dots using exactly n straight lines.
—Benj Edwards, ArsTechnica, 21 July 2025
See All Example Sentences for triangular
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Anne Enright, New Yorker, 27 July 2025
Orange doors, geometric balconies and triangular chimneys: these are some of the features that distinguish the mid-century modern houses designed by architect Don Tosi.
—Carolyn Stein, Chicago Tribune, 23 July 2025
These fossils indicate that the tiny creatures had hair-like extensions on triangular grooves around their mouths.
—Jack Knudson, Discover Magazine, 23 July 2025
For example, problem one asks students to imagine a triangular grid of dots (like a triangular pegboard) and figure out how to cover all the dots using exactly n straight lines.
—Benj Edwards, ArsTechnica, 21 July 2025
See All Example Sentences for triangular
Cite this Entry
“Triangular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/triangular. Accessed 2 Aug. 2025.
Copy CitationKids Definition
triangular
adjective
tri·an·gu·lar
trī-ˈaŋ-gyə-lər
1
: of, relating to, or having the form of a triangle
2
: having a triangular base or principal surface
a triangular pyramid
Medical Definition
triangular
noun
tri·an·gu·lar
trī-ˈaŋ-gyə-lər
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