T square

noun

: a ruler with a crosspiece or head at one end used in making parallel lines

Word History

First Known Use

1785, in the meaning defined above

Time Traveler
The first known use of T square was in 1785

Dictionary Entries Near T square

Cite this Entry

“T square.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T%20square. Accessed 29 Nov. 2024.

Kids Definition

T square

noun
: a ruler with a piece fixed at right angles at one end used to draw parallel lines

More from Merriam-Webster on T square

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!