triquetrous

triquetrous

[trahy-kwee-truhs, -kwe-]
adjective
1.
three-sided; triangular.
2.
having a triangular cross section.

Origin:
1650–60; < Latin triquetrus triangular, equivalent to tri- tri- + -quetrus cornered

subtriquetrous, adjective
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World English Dictionary
triquetrous (traɪˈkwiːtrəs, -ˈkwɛt-)
 
adj
triangular, esp in cross section: a triquetrous stem
 
[C17: from Latin triquetrus having three corners]

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