Webster's Online Dictionary
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Definition: INDOGEN

Part of Speech Definition
Noun 1. A complex, nitrogenous radical, C8H5NO, regarded as the essential nucleus of indigo.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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

Note: Indogen \In"do*gen\, noun. [Indigo -gen.]. (references)

Definition: INDOGEN

Part of SpeechDefinition
Noun1. A complex, nitrogenous radical, C8H5NO, regarded as the essential nucleus of indigo.[Websters].

Source: Webster's Revised Unabridged Dictionary (1913)

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

Note: Indogen \In"do*gen\, noun. [Indigo -gen.]. (references)