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Meaning of thionoline | Babel Free

Noun CEFR B2

Definitions

A fluorescent crystalline substance, intermediate in composition between thionol and thionine.

uncountable, usually

CEFR level

B2

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

See also

thionucleoside thionuphlutine Thionville thionyl thionyl chloride thionylamine