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pyrite
pyro-
pyrocatechol
pyrocellulose
pyrochemical
pyroclastic
pyroconductivity
pyroelectricity
pyrogallol
pyrogen
pyrogenic
pyrography
pyroligneous acid
pyrolusite
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pyronine

py·ro·nine [ prə nn ] (plural py·ro·nines)


noun 
Definition:
 
red dye used in biological tests: a red dye used in biological tests, especially a test to detect the presence of RNA

[Late 19th century. < German]
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