branchiopod
Concise Oxford English Dictionary © 2008 Oxford University Press:
branchiopod /ˈbraŋkɪə(ʊ)pɒd/
▶noun Zoology a small aquatic crustacean of the class Branchiopoda, with gills on the feet, e.g. a water flea or fairy shrimp.
– origin from mod. L. Branchiopoda, from Gk brankhia ‘gills’ + pous, pod- ‘foot’.
'branchiopod' also found in these Oxford entries:

