ectocyst

== English == === Etymology === From ecto- +‎ cyst. === Noun === ectocyst (plural ectocysts) (archaic, zoology) The exoskeleton of some members of Bryozoa. === References === “ectocyst”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.