One of the mysteries of the English language finally explained.
In certain hydromedusae: a tentacle formed by an extension of the umbrellar ectoderm and lacking mesogloea. Usually in plural.
Late 19th century; earliest use found in Science. From ancient Greek περόνη fibula, brooch + scientific Latin -ium, apparently after German Mantelspange, lit. ‘cloak pin’.
In this article we explore how to impress employers with a spot-on CV.