Webster's Online Dictionary
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Definition: HEPTONE

Part of Speech Definition
Noun 1. A liquid hydrocarbon, C7H10, of the valylene series.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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

Etymology:Heptone \Hep"tone\, noun. [from Greek expression "epta` seven.]. (references)

Definition: HEPTONE

Part of SpeechDefinition
Noun1. A liquid hydrocarbon, C7H10, of the valylene series.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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

Etymology:Heptone \Hep"tone\, noun. [from Greek expression "epta` seven.]. (references)