Definition of mercury
- the mercury rose above 70 degrees
In the summer, the mercury can reach over 100 degrees Fahrenheit.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mercury.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: 14th centurySee Words from the same year
: a silver metal that is liquid at normal temperatures
: the mercury in a thermometer that shows the air's temperature
Mercury : the planet that is closest to the sun
What made you want to look up mercury? Please tell us where you read or heard it (including the quote, if possible).
Merriam-Webster's New Words Quiz—Fall 2017 Edition!
Test your visual vocabulary with our 10-question challenge!TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.TAKE THE QUIZ