synthetic iron oxide

noun

Definition of synthetic iron oxide

: a pigment that is produced from an iron salt (such as copperas) by precipitation or calcination under controlled conditions and is often purer than natural iron oxides

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“Synthetic iron oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/synthetic%20iron%20oxide. Accessed 19 Oct. 2020.

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