Definition of peronium in English:

peronium

noun

Zoology
  • In certain hydromedusae: a tentacle formed by an extension of the umbrellar ectoderm and lacking mesogloea. Usually in plural.

Origin

Late 19th century; earliest use found in Science. From ancient Greek περόνη fibula, brooch + scientific Latin -ium, apparently after German Mantelspange, lit. ‘cloak pin’.

Pronunciation

peronium

/pəˈrəʊnɪəm/