ˌ ̷ ̷ ̷ ̷+ˈfilēəm noun
( plural hydrophyl·lia -ēə)
Etymology: New Latin, from hydr- + -phyllium (from Greek phyllion small leaf, diminutive of phyllon leaf) — more at blow (to blossom)
: one of the leaflike organs regarded as greatly modified zooids that cover other zooids of many siphonophores