aceto-orcein
noun
ace·to-or·ce·in ˌa-sə-tō-ˈȯr-sē-ən 
ə-ˌsē-tō-
: a biological stain consisting of orcein in solution with acetic acid
Root tips were obtained and stained with aceto-orcein, and root tip squashes were performed.
A. Lane Rayburn et al., Crop Science, 27 Oct. 2005
A. Lane Rayburn et al., Crop Science, 27 Oct. 2005
Word History
Etymology
aceto- + orcein
First Known Use
1949, in the meaning defined above