Ink sac

Definition of Ink sac

(Zool.) an organ, found in most cephalopods, containing an inky fluid which can be ejected from a duct opening at the base of the siphon. The fluid serves to cloud the water, and enable these animals to escape from their enemies. See Illust. of Dibranchiata.

See also: Ink

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Injudicable
Injudicial
Injudicious
Injudiciously
Injudiciousness
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injured
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Injuria
Injurious
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Ink
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-Ink sac-
ink-jet printer
Inker
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