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galactomannan

noun
ga·​lac·​to·​mannan | \" +\

Definition of galactomannan 

: any of several polysaccharides that occur especially in seeds (as locust beans) and yield galactose and mannose on hydrolysis

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First Known Use of galactomannan

1897, in the meaning defined above

History and Etymology for galactomannan

galact- + mannan

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The first known use of galactomannan was in 1897

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