thəˈläfəd.ə noun plural
Usage: capitalized
Etymology: New Latin, from thall- + -phyta
in some classifications : a primary division of the plant kingdom that consists of plants with single-celled sex organs or with many-celled sex organs of which all cells give rise to gametes, that is now commonly considered to be a heterogeneous assemblage, and that when recognized comprises the Algae and Fungi — compare eumycetes