orcein
A dye, related to litmus, that is extracted from the lichen Rocella tinctoriaA dye, related to litmus, that is extracted from the lichen Rocella tinctoria; used as a microscopic stain and as a food colouring
Meaning
1 senses(uncountable, usually)A dye, related to litmus, that is extracted from the lichen Rocella tinctoria; used as a microscopic stain and as a food colouring
Origin
From French orcéine, modification of orcinol. See also orchil.From French orcéine, modification of orcinol. See also orchil.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: orceins| Singular | orcein |
|---|
uncountable
Synonyms
2 synonymsorchilE121
Word family
2 related wordsLessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable