Webster's Online Dictionary
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Definition: DELTOHEDRON

Part of Speech Definition
Noun 1. A solid bounded by twelve quadrilateral faces. It is a hemihedral form of the isometric system, allied to the tetrahedron.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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Date "Deltohedron" was first used in popular English literature: sometime before 1914. (references)

Etymology:Deltohedron \Del`to*he"dron\, noun. [from Greek expression de`lta, the letter [Delta] 'e`dra seat, base.]. (references)

Definition: DELTOHEDRON

Part of SpeechDefinition
Noun1. A solid bounded by twelve quadrilateral faces. It is a hemihedral form of the isometric system, allied to the tetrahedron.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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Date "DELTOHEDRON" was first used in popular English literature: sometime before 1914. (references)

Etymology:Deltohedron \Del`to*he"dron\, noun. [from Greek expression de`lta, the letter [Delta] 'e`dra seat, base.]. (references)