octopus ink

noun

A defensive fluid composed of melanin and mucus that an octopus ejects from an ink sac through its siphon.

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Meanings

nounoctopus ink (countable and uncountable, plural octopus inks)

plural octopus inks

  1. countableuncountablebiologyA defensive fluid composed of melanin and mucus that an octopus ejects from an ink sac through its siphon.
Cite this entry
APA

octopus ink. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/octopus%20ink

MLA

“octopus ink.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/octopus%20ink. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “octopus ink,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/octopus%20ink.

Source: octopus ink on Wiktionary, CC BY-SA 4.0.