Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of triquadrantal is as below...

Triquadrantal :: Triquadrantal (a.) Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles..

Trirectangular :: Trirectangular (a.) Having three right angles. See Triquadrantal.

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