noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   One of the flat, leaf-like, protective zooids covering other zooids of certain Siphonophorae. archaic

Etymology

From Ancient Greek ὕδωρ (húdōr, “water”) + φύλλιον (phúllion), diminutive of φύλλον (phúllon, “leaf”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.