- an arrangement of three couches around a table for reclining upon while dining
- a dining room, esp one containing such an arrangement of couches
WordReference Random House Unabridged Dictionary of American English © 2026
tri•clin•i•um
(trī klin′ē əm),USA pronunciation n., pl. -clin•i•a (-klin′ē ə).USA pronunciation [Rom. Hist.]
- a couch extending along three sides of a table, for reclining on at meals.
- a dining room, esp. one containing such a couch.
- Greek triklí̄nion, diminutive of tríklīnos having three couches (adjective, adjectival), dining room so furnished (noun, nominal), equivalent. to tri- tri- + klí̄n(ē) couch (see clinic) + -ion diminutive suffix
- Latin trīclīnium
- 1640–50
Collins Concise English Dictionary © HarperCollins Publishers::
triclinium /traɪˈklɪnɪəm/ n ( pl -ia /-ɪə/)(in ancient Rome)