Meanings
nounmarking blue (uncountable)
- uncountableA dye used in metalworking, made by mixing methylated spirit with shellac and gentian violet, to aid in marking out rough parts for further machining.
Synonyms: layout stain, Prussian blue
Synonyms & antonyms
nounA dye used in metalworking, made by mixing methylated spirit with shellac and gentian violet, to aid in marking out rough parts for further machining.
Similar
layout stainPrussian blue
Cite this entry
APA
marking blue. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/marking%20blue
MLA
“marking blue.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/marking%20blue. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “marking blue,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/marking%20blue.
Source: marking blue on Wiktionary, CC BY-SA 4.0.