Noun | 1. | division Euglenophyta - free-swimming flagellate algae kingdom Protoctista, Protoctista - in most modern classifications, replacement for the Protista; includes: Protozoa; Euglenophyta; Chlorophyta; Cryptophyta; Heterokontophyta; Rhodophyta; unicellular protists and their descendant multicellular organisms: regarded as distinct from plants and animals class Euglenophyceae, Euglenophyceae - coextensive with the division Euglenophyta division - (biology) a group of organisms forming a subdivision of a larger category |