galactan

[ guh-lak-tuh n, -tan ]
/ gəˈlæk tən, -tæn /

noun Biochemistry.

any of the class of hexosans, as agar, that yield galactose upon hydrolysis.
Also galactosan.

Origin of galactan

From German, dating back to 1885–90; see origin at galact-, -ane