Galactan is a polysaccharide consisting of polymerized galactose. Galactan derived from Anogeissus latifolia is primarily α(1→6), but galactan from acacia trees is primarily α(1→3). ...
<biochemistry> A polysaccharide composed of repeating galactose units as a polymer. They can consist of branched or unbranched chains in any linkages. ... (21 Jun 2000) ... 
Polymer of galactose.
Type: Term Pronunciation: gă-lak′tan Definitions: 1. A polymer of galactose occurring naturally, along with galacturonans and arabans, in pectins, agar. Synonyms: galactosans