‖n. [ NL., fr. Gr. me`sos middle + &unr_; a glutinous substance. ] (Zool.) A thin gelatinous tissue separating the ectoderm and endoderm in certain coelenterates. -- Mes`o*glœ"al a. [1913 Webster]
‖n. [ NL., from Gr. zw^, on an animal + &unr_; any glutinous substance. ] (Biol.) A colony or mass of bacteria imbedded in a viscous gelatinous substance. The zoogloea is characteristic of a transitory stage through which rapidly multiplying bacteria pass in the course of their evolution. Also used adjectively. [ 1913 Webster ]