Illustrated Companion to the Latin Dictionary/Hypocaustum

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. 

HYPOCAUS'TUM (ὑπόκαυστον). A room, of which the temperature is warmed by means of a furnace and flues (hypocausis) directed under it, as represented by the last engraving, Plin. Ep. ii. 17. 11. and 23. Compare Stat. Sylv. i. 5. 59., where the word seems to be applied to the flues under the chamber rather than to the chamber itself.