Hydrophyllium
Pronunciation : Hy`dro*phyl"li*um, n.; pl. L. Hydrophyllia
Part of Speech : E.
Etymology : [NL., fr. Gr. "y`dwr water + (Zo?l.)
Definition : Defn: One of the flat, leaflike, protective zooids, covering other zooids of certain Siphonophora.
Hydrophylliums.
Source : Webster's Unabridged Dictionary, 1913