ichthyocolla

Latin ichthyocolla, from Ancient Greek ἰχθυόκολλα (ikhthuókolla, “fish-glue”), from ἰχθύς (ikhthús, “fish”) + κόλλα (kólla, “glue”).

ichthyocolla (uncountable)

1. (archaic) Fish glue, isinglass; a glue prepared from the sounds (swimming bladders) of various fishes.
   • 1665, Robert Hooke, Micrographia, section VII:

     Several others of these drops I covered over with a thin but very tuff skin of Icthyocolla, which being very tough and very transparent, was the most convenient substance for these tryals that I could imagine […].

• ichthyocol