lacunar

noun

1. A sunken panel or coffer in a ceiling or a soffit; a ceiling containing panels of this kind.

   “Lacunar, (in Architect.) the flooring or Planking above the Porticoes; a cieled Roof arched or fretted.”

   “Lacunariæ, or Lacunars, panels or coffers formed on the ceilings of apartments, and sometimes on the soffits of coronae in the Ionic, Corinthian, and Composite orders.”

   “On the grounds of the coffers forming the lacunaria of the ceilings.”

adj

1. (not-comparable, relational)Of or pertaining to a lacuna.

   “The circulation is always more or less extensively lacunar; even arteries may be wanting.”

   “Once stroke was classified by a risk factor-free method, the stronger relationship between hypertension and lacunar versus nonlacunar infarction patients disappeared.”