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

Word History


galact- + mannan

First Known Use

1897, in the meaning defined above

Time Traveler
The first known use of galactomannan was in 1897

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near galactomannan

Cite this Entry

“Galactomannan.” Dictionary, Merriam-Webster, Accessed 30 Sep. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!