The story
- Ancient Greek · derived fromπῑλίδιον“little cap”
- English todaypilidium
From Ancient Greek πῑλίδιον (pīlídion, “little cap”), diminutive of πῖλος (pîlos), probably influenced by other formations in -idium, like miracidium, planidium, and coracidium.
Etymology from Wiktionary, CC BY-SA 4.0.