Definition of orcein in English:


Line breaks: or¦cein
Pronunciation: /ˈɔːsiːɪn


[mass noun] Chemistry
  • A red dye obtained from orchil, used as a microscopic stain.
    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).


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

More definitions of orcein

Definition of orcein in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space