arborescent appendage

noun

Definition of arborescent appendage

: any branched accessory vascular structure in the gill chamber of certain fishes that leave the water (as the climbing perch) by which they are enabled to breathe air

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“Arborescent appendage.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arborescent%20appendage. Accessed 28 Oct. 2020.

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