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

The federal standard for lead is 0.15 micrograms per cubic meter averaged over three months of monitoring data, per the MPCA. —Mars King, Twin Cities, 30 July 2025

Magnesium: 5 mg Phosphorus: 9 mg Potassium, K: 176 mg Vitamin C: 4 mg Folate: 4 micrograms (mcg) Choline: 5 mg Vitamin A, RAE: 5 mcg Beta carotene: 54 mcg Vitamin K: 13 mcg Grapes come in many varieties. —Kathi Valeii Published, Verywell Health, 26 June 2025

One of the newfound bitter substances activated the taste receptors even at the lowest concentration measured, 63.3 micrograms per liter. —K. R. Callaway, Scientific American, 8 Aug. 2025

Concentration levels dropped back below the standard to 0.09 micrograms per cubic meter in April, and even lower to 0.06 micrograms in May. —Mars King, Twin Cities, 30 July 2025

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