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Added 10 October 2026

placoid

adjective

adjective Definition from Wiktionary (CC BY-SA). More about placoid at Wordnik → Where our words come from →

Platelike; having irregular, platelike, bony scales, often bearing spines; pertaining to the placoid fish

noun

Such a scale
Any fish having placoid scales, such as the sharks
A placodioid lichen

Origin

From Ancient Greek πλάξ (pláx, stem plak-) + -oid.

From Wiktionary, via Kaikki.org (CC BY-SA)

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