superheavy
Americanadjective
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Chemistry, Physics. pertaining to any of a series of elements having an atomic number greater than 103.
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heavier than usual for its kind.
a superheavy oil; superheavy magnetic monopoles.
adjective
Etymology
Origin of superheavy
First recorded in 1820–30; super- ( def. ) + heavy ( def. )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This superheavy element would be something entirely new to our planet.
From BBC • Feb. 22, 2025
An overview of the element discoveries and first chemical studies at GSI can be found in the article "Five decades of GSI superheavy element discoveries and chemical investigation," published in May 2022.
From Science Daily • Feb. 13, 2024
However, there is a general agreement that truly stable superheavy nuclei are no longer to be expected.
From Science Daily • Feb. 13, 2024
The researchers’ mathematical analysis showed how any object with mass—and not just a superheavy one such as that of a black hole—affects the pairs of particles and antiparticles that emerge from the vacuum of space.
From Scientific American • Jun. 22, 2023
Teller believed a promising option to fuel a Super bomb would be to use tritium, a superheavy isotope of hydrogen.
From "Big Science" by Michael Hiltzik
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
