How do you spell trian?

"Trian" isn't a complete word in the English language. It might be a part of a larger word or a misspelling.

Do you mean one of these words?

* Train: A vehicle that runs on rails.

* Triangle: A shape with three sides.

* Triangulate: To determine the position of something by using the angles formed by lines from three known points.

Please provide more context so I can help you spell the word you're looking for.