Search Dictionary
Definition of micrometer

micrometer

/maɪˈkrɑːmɪtər/
(UK: micrometre)
mi · crom · e · ter

Plural:micrometers
•
Adjective:micrometric
JUMP TO:

micrometer Lexical Profile

micrometer Game Scores & Validity

• noun

1

A unit of length in the International System of Units (SI) equal to one millionth of a meter.

Example

"Human hair typically ranges from 17 to 181 micrometers in thickness."


2

A precision measuring instrument used by engineers and machinists to measure very small distances or thicknesses, typically incorporating a finely threaded screw.

Example

"The machinist used a micrometer to ensure the metal shaft was manufactured to the exact required diameter."

Synonyms
View all synonyms for micrometer

Word Nuance & Usage

The pronunciation typically shifts depending on the meaning: as an instrument, it is stressed on the second syllable (my-CROM-ih-ter), whereas as a unit of length, it is often stressed on the first syllable (MY-cro-mee-ter).

• Rhymes for micrometer

Word Origin & Etymology

Coined in the 17th century from French 'micromètre', derived from the Greek 'mikros' (small) and 'metron' (measure).

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Micrometer. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/micrometer
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.