Definition of orcein in English:

orcein

Syllabification: or·ce·in
Pronunciation: /ˈôrsēin
 
/

noun

Chemistry
  • A red dye obtained from orchil, used as a stain in microscopic study.
    More example sentences
    • The chromosomes were stained with acetic orcein and visualized with a light microscope.
    • Chromosomes were counted in root tips stained with acetic orcein.
    • The slide was immersed in 1% orcein in 45% acetic acid for 15 min, washed in distilled water, air-dried and a coverslip was mounted in Histomount (National Diagnostics, Hull, UK).

Origin

mid 19th century: alteration of orcin, another name for orcinol.

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Word of the day milord
Pronunciation: mɪˈlɔːd
noun
used to address an English nobleman