endopod

/ˈɛndəˌpɑd/
noun
  1. The inner branch of a two-branched limb (biramous limb) of a crustacean, such as a shrimp or lobster.
    • In many crustaceans, the endopod is used for locomotion while the exopod aids in swimming.
    • The endopod of the shrimp's leg helps it walk along the ocean floor.
    • The biologist carefully examined the endopod under the microscope to identify the species.
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