lacunar

< /ˌlæk yəˈnɛər i ə/.

1. Architecture.
   1. a coffered vault, ceiling, or soffit.
   2. coffer(def 4).

adjective

2. lacunal.

noun plural lacunars or lacunaria (ˌlækjʊˈnɛərɪə)

1. Also called: lequear a ceiling, soffit, or vault having coffers
2. another name for coffer (def. 3)

adjective

3. of, relating to, or containing a lacuna or lacunas

adj.

1. Of or relating to a lacuna; lacunal.
2. Of or relating to a temporary absence of manifestation of a symptom.