Simple past tense and past participle of broaden.(verb)
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Use "broadened" in a sentence
"Of course all that happened before her horizon had "broadened" -- before she encountered a truly distinguished person like Ridgeley Holman Dobson."
"The definition has been broadened, which is why it's hard to know if there's really been an explosion."
"Whereas a so-called broadened mandate was never officially endorsed by a plenary meeting of the UNHRC, neither in the form proposed by Justice Goldstone nor in the form proposed by Ambassador Uhomoibhi;"