Originally refers to early 20th-century battleships revolutionizing naval power. The HMS Dreadnought became the namesake for an entire class of battleships.
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Historical Context
Mostly historical use, referring specifically to pre-World War II battleships. Museum exhibits often feature models of the great dreadnoughts.
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Metaphorical Use
Can be used metaphorically to describe something formidable or powerful. In the corporate world, the company was a dreadnought due to its size.