Vulcan
Americannoun
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the ancient Roman god of fire and metalworking, identified with the Greek Hephaestus.
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Military. a six-barrel, 20 mm U.S. Army antiaircraft gun system mounted on an armored personnel carrier and first deployed in 1968.
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Astronomy. a hypothetical planet nearest the sun whose existence was erroneously postulated to account for perturbations in Mercury's orbit.
noun
noun
Other Word Forms
Etymology
Origin of Vulcan
First recorded in 1505–15, Vulcan is from the Latin word Vulcānus
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.
The Pentagon has supported Vulcan and ReElement construction projects with hundreds of millions of dollars in investments.
From The Wall Street Journal ● Jul. 14, 2026
Beyond its rare-earth magnet partnership with Vulcan, ReElement is also proving it can produce other critical minerals, including germanium.
From The Wall Street Journal ● Jul. 14, 2026
The Vulcan system is calibrated using official traffic records and energy consumption data, providing an independent benchmark for measuring vehicle emissions.
From Science Daily ● Jun. 18, 2026
His Vulcan and Hestia projects, supported by multiple federal agencies, quantify and visualize greenhouse gas emissions nationwide, from individual power plants and roadways to neighborhoods.
From Science Daily ● Jun. 18, 2026
She even knew how to do the Vulcan salute.
From Absolutely Almost by Lisa Graff
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.
