- n Dinoflagellata in some classifications considered a phylum of the kingdom Protista; in others included in the plant phylum Pyrrophyta
Century Dictionary and Cyclopedia
- dinoflagellata Those flagellate infusorians commonly called Cilioflagellata (which see). The name was given because the structure before regarded as a girdle of cilia seemed to be a second flagellum lying in the transverse groove which nearly all these infusorians possess in addition to the longitudinal one. The Dinoflagellata are named as a class, and divided into Adinida and Dinifera. Bütschli.