amido naphthol red

noun, often capitalized A&N&R
ami·​do naph·​thol red | \ ¦aməˌdō¦- \

Definition of amido naphthol red

: either of two red acid azo dyes

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First Known Use of amido naphthol red

1903, in the meaning defined above

History and Etymology for amido naphthol red

amid- + naphthol

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Time Traveler for amido naphthol red

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The first known use of amido naphthol red was in 1903

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Cite this Entry

“Amido naphthol red.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amido%20naphthol%20red. Accessed 29 Nov. 2020.

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