noun

length

LENGKTH/leŋkθ/

The extent measured between a beginning and an end.

The strip's length spans ten units on the ruler beneath it.

A straight wooden strip lies immediately above a ruler, with its two square-cut ends aligned precisely to 0 and 10.
Etymology

The suffix turns “long” into a noun for the property of extending in one direction. Length names that measurable extent, whether the object itself is long or short.

In context

Math and Science3:15
we use those units to talk about the distance between two points in a straight line okay so that's the unit and the concept of length
13 - What is Surface Area? Definition & Meaning - Calculate Area of Rectangle & Units

More examples

  • The length of the movie surprises us.
  • The ropes come in several different lengths.
  • The length of the article depends on the topic.

Forms

length · lengths

lengthen verb — To make or become longer.

lengthy adjective — Taking considerable time or written space.

Similar words

distance
Distance measures space between points, not how long something lasts.
duration
Duration refers only to time, not physical measurement.