Of, relating to, or shaped like a triangle.(adjective)
Having a triangle for a base: a triangular pyramid. (adjective)
Relating to or involving three entities, such as three people, objects, or ideas.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "triangular" in a sentence
"From its shape it is usually termed the triangular ligament, and is stretched almost horizontally across the pubic arch, so as to close in the front part of the outlet of the pelvis."
"Procurement philosophy had been "triangular" - three possible sources for the same part, in case one was destroyed."
"István Kulinyi’s has created this concept lamp that allows you to spin triangular pieces to change its appearance."