toluidine red toner

noun

variants or toluidine red or less commonly toluidine toner
sometimes capitalized both Ts&R
: any of a group of red organic pigments that are related to the para reds but are more permanent

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“Toluidine red toner.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/toluidine%20red%20toner. Accessed 23 Nov. 2024.

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