'Issuer' definitions:

Definition of 'issuer'

(from WordNet)
noun
An institution that issues something (securities or publications or currency etc.)

Definition of 'Issuer'

From: GCIDE
  • Issuer \Is"su*er\ ([i^]sh"[-u]*[~e]r), n. One who issues, emits, or publishes. [1913 Webster]