lacunar

[luh-kyoo-ner] /ləˈkyu nər/
noun, plural lacunars, lacunaria
[lak-yuh-nair-ee-uh] /ˌlæk yəˈnɛər i ə/ (Show IPA)
1.
Architecture.
  1. a coffered vault, ceiling, or soffit.
  2. coffer (def 4).
adjective
2.
lacunal.
Origin
1690-1700; lacun(a) + -ar1
British Dictionary definitions for lacunar

lacunar

/ləˈkjuːnə/
noun (pl) lacunars, lacunaria (ˌlækjʊˈnɛərɪə)
1.
Also called lequear. a ceiling, soffit, or vault having coffers
2.
another name for coffer (sense 3)
adjective
3.
of, relating to, or containing a lacuna or lacunas
Word Origin
C17: from Latin lacūnar panelled ceiling, from lacūna cavity; see lacuna
lacunar in Medicine

lacunar la·cu·nar (lə-kyōō'nər)
adj.

  1. Of or relating to a lacuna; lacunal.

  2. Of or relating to a temporary absence of manifestation of a symptom.