What is the verb form of height?

There isn't a verb form of "height". "Height" is a noun, referring to the measurement of vertical distance.

You could use verbs like:

* To measure: "We measured the height of the building."

* To reach: "The tree reaches a height of 30 feet."

* To increase/decrease: "The water level increased in height."

* To stand tall/short: "She stands tall at 6 feet."

Let me know if you'd like to explore other related verbs!