Illustrated Companion to the Latin Dictionary/Diplomarius

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

DIPLOMA'RIUS. A public courier or state messenger; i. e. who was furnished with a public passport (diploma). Inscript. ap. Orelli, 2917.