Arch. Also 6 trabiacion. [irreg. for *trabation, f. L. trab-s, trab-em beam: see -ATION.] † a. A member resembling a horizontal beam; an entablature. Obs. b. Construction with horizontal beams or the like, as opposed to arches or vaults; trabeated structure.
1563. Shute, Archit., C j b. This pillor … supported no other … but his owne Trabiacions.
1704. J. Harris, Lex. Techn., I. Trabeation, or Entablature,… comprehends the Architrave, Frize, and Cornice.
1831. Fraser’s Mag., IV. 283. To apply to an entire cornice, or even to a whole ‘trabeation,’ those curved forms which have hitherto been exclusively confined to mouldings and lesser details.
a. 1878. Sir G. G. Scott, Lect. Archit. (1879), I. 19. Arcuation plastered over to look like trabeation.
