When we coined the term "megafire" for wildfires that exceed 100,000 acres, it was in the back of our mind that if a fire reached 1 million acres it would be called a "gigafire".
Source: wiktionary
Gigafire
Synonyms for "gigafire"
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In addition, due in part to human-caused warming and a drying climate, California recorded its first "gigafire" since modern records began in the early 1930s.
Source: wiktionary
In a historic fire season with million-acre gigafires and more than two dozen deaths, the destruction in Happy Camp barely broke through the long list of dire news stories making the headlines.
Source: wiktionary
From Category 5 hurricanes to flooding from sea-level rise to gigafires, the value of losses from severe weather or climate-related disasters in the United States over the past several years has been unprecedented.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.