1 ultrabright | Definition of ultrabright
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ultrabright

adjective
ul·​tra·​bright | \ ˌəl-trÉ™-ˈbrÄ«t How to pronounce ultrabright (audio) \

Definition of ultrabright

: extremely or extraordinarily bright an ultrabright light bulb ultrabright colors

First Known Use of ultrabright

1896, in the meaning defined above

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