cranidium

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noun

In trilobites, the part of the cephalon (the head) consisting of the glabella and the fixigenae.

OriginAncient Greek κρανίδιον →
Scrabble 14
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Meanings

nouncranidium (plural cranidiums or cranidia)

plural cranidiums · plural cranidia

  1. anatomyIn trilobites, the part of the cephalon (the head) consisting of the glabella and the fixigenae.

Origin

  1. Ancient Greekκρανίδιον“small skull”
  2. Englishcranidium

Latinized form of Ancient Greek κρανίδιον (kranídion, “small skull”), from κρανίον (kraníon) + -ίδιον (-ídion).

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

cranidium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/cranidium

MLA

“cranidium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/cranidium. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “cranidium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/cranidium.

Source: cranidium on Wiktionary, CC BY-SA 4.0.