blue lights

A form of blue light — A mixture of chemicals (including nitre, sulfur and antimony) used in the eighteenth and nineteenth centuries for night-time signaling and general illumination.

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Meanings

noun
  1. pluralplural of blue light
verb
  1. indicativepresentsingularthird personthird-person singular simple present indicative of blue light
Cite this entry
APA

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

MLA

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

Chicago

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

Source: blue lights on Wiktionary, CC BY-SA 4.0.