Search Dictionary
Definition of microgram

microgram

/ˈmaɪ.kroʊˌɡræm/
(UK: microgramme)
mi · cro · gram
Plural:micrograms
JUMP TO:

microgram Lexical Profile

microgram Game Scores & Validity

• noun

1

A metric unit of mass equal to one millionth of a gram (or one thousandth of a milligram), commonly symbolized as μg or mcg.

Example

"The daily recommended intake of vitamin D is measured in micrograms rather than milligrams."

Word Nuance & Usage

In medical and pharmaceutical prescribing, the abbreviation 'mcg' is often preferred over the standard metric symbol 'μg' to prevent accidental misreading as 'mg' (milligram), which would result in a thousandfold dosage error.

• Nearby Words

microfiber
microfiche
microfilm
microgram
microgreen
microgroove
microlender

Cite this Entry

Wordmom. (2026). Definition of Microgram. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/microgram
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.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 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.