Definition of opus sectile in English:

opus sectile

Pronunciation /ˌəʊpəs ˈsɛktɪleɪ/

noun

Archaeology
  • A form of Roman floor decoration similar to mosaic but composed of pieces shaped individually to fit the design, rather than regularly shaped tesserae.

Origin

Mid 19th century. From classical Latin opus work + sectile, neuter of sectilis produced by cutting, used by Vitruvius of Roman floors.