triangular number


triangular number

noun

Definition of TRIANGULAR NUMBER

:  a number (as 3, 6, 10, 15) representable by that many dots arranged in rows that form a triangle and that equals for some positive integer value of n

First Known Use of TRIANGULAR NUMBER

1795

Browse

Next Word in the Dictionary: triangular numbers
Previous Word in the Dictionary: triangular crab
All Words Near: triangular number

Seen & Heard

What made you want to look up triangular number? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More