ChlorophytaPronunciation: /ˈklɔːrə(ʊ)ˌfʌɪtə, ˈklɒ-/Definition of Chlorophyta noun Botany a division of lower plants that comprises the green algae. They are frequently treated as a phylum of the kingdom Protista. Origin:modern Latin (plural), from Greek khlōros 'green' + phuton 'plant'Chlorophyta in other Oxford dictionaries Definition of Chlorophyta in the US English dictionary