counterstain
verb
coun·ter·stain
ˈkau̇n-tər-ˌstān 
counterstained; counterstaining; counterstains
: to stain (something, such as a microscopy specimen) so as to color parts (such as the cytoplasm of cells) not colored by another stain (such as a nuclear stain)
counterstain
noun
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Cite this Entry
“Counterstain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterstain. Accessed 22 Nov. 2024.
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counterstain
1 of 2 noun
coun·ter·stain
-ˌstān
: a stain used to color parts of a microscopy specimen not affected by another stain
especially
: a cytoplasmic stain used to contrast with or enhance a nuclear stain
counterstain
2 of 2 transitive verb
: to stain (a tissue or microscopy specimen) with an additional usually contrasting color
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