ruthenium red

noun

Definition of ruthenium red

: an ammoniated ruthenium chloride obtained as a brownish red powder and used as a microscopic stain and as a test especially for pectin and gums

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First Known Use of ruthenium red

1893, in the meaning defined above

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The first known use of ruthenium red was in 1893

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Cite this Entry

“Ruthenium red.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruthenium%20red. Accessed 24 Nov. 2020.

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