uranin
An alkaline salt of fluorescein, used as a brownish-red dyeAn alkaline salt of fluorescein, used as a brownish-red dye.
Meaning
1 senses(uncountable)An alkaline salt of fluorescein, used as a brownish-red dye.
Origin
From uranium + -in, from its yellowish-green fluorescence, resembling that of uranium glasFrom uranium + -in, from its yellowish-green fluorescence, resembling that of uranium glass.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable