Illustrated Companion to the Latin Dictionary/Xystarcha

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. 

XYSTAR'CHA or -ES (ξυστάρχης). An officer who superintended the exercises of the xystus; the same as, or very similar to, the GYMNASIARCHUS. Ammian. xxi. 1.