Definition of microgram
: one millionth of a gram — see metric system table
Recent Examples of microgram from the Web
Although the CDC says there is no safe level of lead, public health officials really start to worry once a child reaches five micrograms of lead per tenth-of-a-liter of blood (or 5 µg/dL, in science speak).
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 1890
Learn More about microgram
Britannica.com: Encyclopedia article about microgram
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