Atrilithonortrilith[1] is a structure consisting of two large vertical stones (posts) supporting a third stone set horizontally across the top (lintel). It is commonly used in the context of megalithic monuments. The most famous trilithons are those of StonehengeinEngland.
The word trilithon is derived from Greek 'having three stones' (τρι- tri- 'three' + λίθος líthos 'stone') and was first used in its modern archaeological sense by William Stukeley.
Ruprechtsberger, Erwin M. (1999), "Vom Steinbruch zum Jupitertempel von Heliopolis/Baalbek (Libanon)", Linzer Archäologische Forschungen, 30: 7–56
Yule, Paul A. (2014), Cross-roads: Early and Late Iron Age South-eastern Arabia, Abhandlungen der Deutschen Orient-Gesellschaft 30, Wiesbaden: Harrassowitz Verlag, pp. 73–77, doi:10.2307/j.ctvc2rmc8, ISBN978-3-447-19287-3, JSTORj.ctvc2rmc8
