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Meaning of Congo red | Babel Free

Noun CEFR B2

Definitions

A dye that turns red in alkaline, blue in acidic solutions.

countable, uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

Congo snake Congo trypanosomiasis Congo-Brazzaville Congo-Brazzavillean Congo-Kinshasa Congo-Kinshasan