Exotheca

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Exotheca \Ex`o*the"ca\, n. [Nl., fr. Gr. 'e`xw outside + ? a
     case, box.] (Zo["o]l.)
     The tissue which fills the interspaces between the cost[ae]
     of many madreporarian corals, usually consisting of small
     transverse or oblique septa.
     [1913 Webster]