- Also called: indigotin a blue vat dye originally obtained from plants but now made synthetically
- any of various tropical plants of the leguminous genus Indigofera, such as the anil, that yield this dye
- any of a group of colours that have the same blue-violet hue; a spectral colour
- (as adjective): an indigo carpet
WordReference Random House Learner's Dictionary of American English © 2026
in•di•go /ˈɪndɪˌgoʊ/USA pronunciation
n.
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- [uncountable]
- a blue dye obtained from various plants.
- a deep violet blue color.
adj.
- of the color indigo.
in•di•go
(in′di gō′),USA pronunciation n., pl. -gos, -goes, adj.
n.
adj.
n.
- a blue dye obtained from various plants, esp. of the genus Indigofera, or manufactured synthetically.
- See indigo blue (def. 2).
- Plant Biologyany of numerous hairy plants belonging to the genus Indigofera, of the legume family, having pinnate leaves and clusters of usually red or purple flowers.
- a color ranging from a deep violet blue to a dark, grayish blue.
adj.
- Also called indigo-blue, indigotic. of the color indigo.
- Greek indikón, noun, nominal use of neuter of Indikós Indic
- Latin indicum
- Spanish or Portuguese, variant of índico
- 1545–55
Collins Concise English Dictionary © HarperCollins Publishers::
indigo /ˈɪndɪˌɡəʊ/ n ( pl -gos, -goes)
'indigo' also found in these entries (note: many are not synonyms or translations):
anil
- Baeyer
- indigo blue
- indigotin
- indium
- Mitchell
- spectrum
- vat dye
- bastard indigo
- blue false indigo
- blue shark
- bluing
- bunting
- covellite
- false indigo
- gopher snake
- Ind
- indican
- indicolite
- indigo bunting
- indigoid
- indigo snake
- indigotic
- indo-
- indoxyl
- induline
- legume family
- lilac
- rattle-bush
- Tyrian purple
- wild indigo