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ben·zi·dine | \ ˈben-zə-ˌdēn 
\
\Definition of benzidine
: a crystalline diamine base C12H12N2 prepared from nitrobenzene and used especially in making dyes
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benzidine
nounben·zi·dine | \ ˈben-zə-ˌdēn \
\Medical Definition of benzidine
: a crystalline base C12H12N2 used especially in making dyes and in a test for blood
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The first known use of benzidine was in 1845
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