'Clientage' definitions:

Definition of 'clientage'

(from WordNet)
noun
Relation of a client to a patron

Definition of 'Clientage'

From: GCIDE
  • Clientage \Cli"ent*age\, n.
  • 1. State of being client. [1913 Webster]
  • 2. A body of clients. --E. Everett. [1913 Webster]