flash tube
noun
variants
or less commonly flashtube
plural flash tubes also flashtubes
: a gas discharge tube that produces very brief intense flashes of light and is used especially in photography
Cite this Entry
“Flash tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flash%20tube. Accessed 10 Sep. 2025.
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