1. Having three angles; in the form of a triangle. Triangular numbers, the series of numbers formed by the successive sums of the terms of an arithmetical progression, of which the common difference is 1. Triangular compasses, compasses with three legs, used in the construction of maps, charts, &c.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• triangluar,
• traingular,
• trinagular,
• trianguler,
• triangler,
• tiangular,
• tringular,
• trianglular,
• trianglar,
• triagular,
• trangular,
• triangule,
• triangualr,
• trianular,
• truangular,
• triangelar,
• triangulas,
• biangulare,
• triangulared,
• Tryangulares

• triangulate,
• transpolar,
• triangulation,
• triangle,
• triangulum,
• triangularity,
• tramcar.

The adjective form of the word "triangular" is "triangular".

The plural form of the word "triangular" is "triangulars".

The singular form of the word "triangular" is "triangle"