microgram

noun

mi·​cro·​gram ˈmī-krə-ˌgram 

: one millionth of a gram see Metric System Table

Examples of microgram in a Sentence

Recent Examples on the Web

This can modestly contribute to your daily vitamin K needs, which is 120 and 90 micrograms for men and women, respectively. — Kirsten Nunez, Martha Stewart, 13 Sep. 2026

There’s no official daily B1 recommendation for GLP-1 users, but Flanagan says the guideline for bariatric surgery patients is 12-50 micrograms per day. — Helen Carefoot, Flow Space, 12 Aug. 2026

Specifically, that 2001 testing showed the carcinogenic solvent and dry-cleaning chemical perchloroethylene, or PCE, in the soil at levels as high as 6,658 micrograms per liter, said Alysa Pakkidis, information officer for the agency. — Kori McNair, Los Angeles Times, 11 Aug. 2026

The table below spells them out in grams (g), milligrams (mg), micrograms (mcg), and international units (IU). — Lana Barhum, Verywell Health, 1 July 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1890, in the meaning defined above

Rhymes for microgram

• abraham
• anagram
• cablegram
• cofferdam
• dendrogram
• diagram
• diaphragm
• epigram
• hexagram
• histogram
• hologram
• instagram

Medical Definition

microgram

noun

mi·​cro·​gram ˈmī-krə-ˌgram 

1

: one millionth of a gram

2

: micrograph sense 1