noun see: horn Date: 1909 any of an order (Cladocera) of minute chiefly freshwater branchiopod crustaceans that includes the water fleas
CLADOCERAN
Meaning of CLADOCERAN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012