engineer's blue

noun

A blue paste made from Prussian blue and some oily substance, used to verify the mating of components by rubbing a coated workpiece against the target surface to leave marks.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounengineer's blue (uncountable)
  1. uncountableA blue paste made from Prussian blue and some oily substance, used to verify the mating of components by rubbing a coated workpiece against the target surface to leave marks.
Cite this entry
APA

engineer's blue. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/engineer's%20blue

MLA

“engineer's blue.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/engineer's%20blue. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “engineer's blue,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/engineer's%20blue.

Source: engineer's blue on Wiktionary, CC BY-SA 4.0.