Definition of pustulan in English:

pustulan

noun

Biochemistry
  • A polysaccharide consisting of glucose residues, originally isolated from the lichen Lasallia pustulata and also present in various other lichens (especially of the family Umbilicariaceae) and fungi.

Origin

1950s. Alteration of pustulin, after other names of polysaccharides ending in -an, e.g. glucosan, mannan.

Pronunciation

pustulan

/ˈpʌstjʊlan//ˈpʌstʃʊlan/