thioindigo

noun
thio·​indigo | \ ¦thī(ˌ)ō+\

Definition of thioindigo

1 : a red vat dye C16H8O2S2 like indigo in chemical structure except for replacement of both imino groups by sulfur atoms
2 : any of several vat dyes derived from or closely related to thioindigo

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for thioindigo

International Scientific Vocabulary thi- + indigo

Keep scrolling for more

Comments on thioindigo

What made you want to look up thioindigo? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

something desired as essential

Get Word of the Day daily email!

Test Your Vocabulary

What's that Smell?! Quiz

  • wide eyed dog smelling rose
  • Someone who is hircine smells like a:
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!