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Definition of arthrobranch in English:

arthrobranch

Pronunciation /ˈɑːθrə(ʊ)braŋk/

noun

Zoology

  • In some crustaceans: a gill attached to the articulating membrane of the basal joint of a thoracic appendage with the body.

Origin

Late 19th century; earliest use found in George Rolleston (1829–1881), physician and physiologist. From arthro- + -branch.