A heraldic term for a dolphin; or a chemical compound related to delphinium alkaloids.
From Old French dauphin/delphin, which may derive from a personal name (Dauphiné region) or from Latin delphis (dolphin). Used in heraldry and chemistry.
In medieval French heraldry, the dolphin became so associated with royalty that 'Dauphin' became the official title for the French king's eldest son—giving us one of history's most poetic royal titles.
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