Definition of microgram
: one millionth of a gram — see metric system table
Recent Examples of microgram from the Web
Its poison, called batrachotoxin, is so potent that there’s enough in one frog to kill ten grown men, with only two micrograms—roughly the amount that would fit onto the head of a pin—needed to kill a single individual.
A monitor at the Southwick Community Center, 3126 Southern Avenue, peaked at 122 micrograms per cubic meter around 11 p.m., the early data shows.
The next week the farm was officially closed after oysters tested over the limit of 80 micrograms per 100 grams.
The state sets the acceptable level of lead with a formula based on micrograms per liter, which translates to a maximum of 15 parts per billion.
The Centers for Disease Control and Prevention considers a level of 5 micrograms of lead per deciliter of blood to be high in children, but no level of lead is considered safe because of its potential detrimental effects on child development.
According to the National Institutes of Health, 2.6 micrograms per day is the recommendation for pregnant women.
Even 1 microgram per liter is considered a cause for health concerns.
Each of those children previously had an elevated level of lead between 5 and 36 micrograms per deciliter.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microgram.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of microgram
International Scientific Vocabulary
First Known Use: circa 1890See Words from the same year
Learn More about microgram
Britannica.com: Encyclopedia article about microgram
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