Having two branches or two-branched, especially describing jointed limbs in crustaceans and other arthropods.
From 'bi-' (two) and Latin 'ramus' (branch). Standard zoological term for describing arthropod morphology.
Biramous limbs are a defining feature of crustaceans—unlike insects with simple legs, crabs and lobsters have these dual branches that let them manipulate food and swim simultaneously!
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