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congo red

con·go red
C c

Transcription

    • US Pronunciation
    • US IPA
    • [kong-goh red]
    • /ˈkɒŋ goʊ rɛd/
    • US Pronunciation
    • US IPA
    • [kong-goh red]
    • /ˈkɒŋ goʊ rɛd/

Definitions of congo red words

  • noun congo red a brownish-red soluble powder, used as a dye, a diagnostic indicator, a biological stain, and a chemical indicator. Formula: C32H22N6O6S2Na2 3
  • noun congo red a sodium salt, C32H22O6N6S2Na2, used for dyeing wool and cotton and as an acid-base indicator: it becomes blue in an acid solution and remains red in an alkaline or neutral solution 3
  • noun congo red a water-soluble powder, C 32 H 22 O 6 N 6 S 2 Na 2 , one of the Congo colors that is not acid-fast or lightfast: used chiefly as a dye, biological stain, and chemical indicator. 1
  • noun congo red a dye that turns red in alkaline, blue in acidic solutions. 0

Information block about the term

Origin of congo red

First appearance:

before 1880
One of the 23% newest English words
First recorded in 1880-85

Historical Comparancy

Parts of speech for Congo red

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation

congo red popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 39% of English native speakers know the meaning and use word.
According to our data about 53% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

congo red usage trend in Literature

This diagram is provided by Google Ngram Viewer

See also

Matching words

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