'anaspidacea' originates from New Latin, specifically the word 'Anaspidacea', where 'an-' meant 'without', 'aspid-' meant 'shield', and '-acea' is a suffix used in zoological taxonomy.

'anaspidacea' was formed in modern scientific Latin for taxonomic classification and has remained unchanged as a scientific term.

Initially, it meant 'those without a shield', referring to the lack of a true carapace, and now it specifically refers to a taxonomic order of crustaceans.