Definition of galactan in US English:

galactan

noun

Chemistry
  • Any of a class of polysaccharides which are composed of a chain of galactose residues, and which yield galactose on hydrolysis.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From German Galactan, alteration of Galactin after Dextran.

Pronunciation

galactan

/ɡəˈlaktan/