millimeter

word

Definition

A unit of length in the metric system equal to one thousandth of a meter (0.001 meter). It is used to measure very small distances or thicknesses.

Usage & Nuances

Always spelled 'millimeter' in US English and 'millimetre' in British English. Abbreviated as 'mm'. Commonly used in science, engineering, and construction to express small measurements. Not typically used for everyday lengths (like height or room size).

Example Sentences

The insect is only two millimeters long.

basic

Could you move that line one millimeter to the left?

natural

The doctor said the tumor grew by just a few millimeters this year.

natural

The width of this paper is 210 millimeters.

basic

He measured exactly five millimeters of rain.

basic

There's not even a single millimeter of space left in my suitcase.

natural