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indigo blue

noun
1.
indigo (def 4).
2.
Also called indigo, indigotin. a dark-blue, water-insoluble, crystalline powder, C 16 H 10 N 2 O 2 , having a bronzelike luster, the essential coloring principle of which is contained along with other substances in the dye indigo and which can be produced synthetically.
Origin
1705-1715
1705-15
Related forms
indigo-blue, adjective

indigo

[in-di-goh] /ˈɪn dɪˌgoʊ/
noun, plural indigos, indigoes.
1.
a blue dye obtained from various plants, especially of the genus Indigofera, or manufactured synthetically.
2.
indigo blue (def 2).
3.
any of numerous hairy plants belonging to the genus Indigofera, of the legume family, having pinnate leaves and clusters of usually red or purple flowers.
4.
a color ranging from a deep violet blue to a dark, grayish blue.
adjective
5.
Also called indigo-blue, indigotic. of the color indigo.
Origin
1545-55; < Spanish or Portuguese, variant of índico < Latin indicum < Greek indikón, noun use of neuter of Indikós Indic
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for indigoblue

indigo

/ˈɪndɪˌɡəʊ/
noun (pl) -gos, -goes
1.
Also called indigotin. a blue vat dye originally obtained from plants but now made synthetically
2.
any of various tropical plants of the leguminous genus Indigofera, such as the anil, that yield this dye Compare wild indigo
3.
  1. any of a group of colours that have the same blue-violet hue; a spectral colour
  2. (as adjective) an indigo carpet
Derived Forms
indigotic (ˌɪndɪˈɡɒtɪk) adjective
Word Origin
C16: from Spanish indico, via Latin from Greek Indikos of India

indigo blue

noun, adjective (indigo-blue when prenominal)
1.
the full name for indigo (sense 1), indigo (sense 3)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for indigoblue
indigo
1555, from Sp. indico, Port. endego, and Du. (via Port.) indigo, all from L. indicum "indigo," from Gk. indikon "blue dye from India," lit. "Indian (substance)," neut. of indikos "Indian," from India (see India). Earlier name in Mediterranean languages was annil, anil (see aniline).
Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for indigoblue

indigo

noun

A kind of marijuana (1990s+ Narcotics)


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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