The term 'Tropical Succulent Plant' can be summarized by the crossword solution Echeveria, which is a genus of flowering plants in the family Crassulaceae. These plants are native to semi-desert regions of Central America, Mexico, and parts of South America. They are known for their rosette-shaped leaves and colorful flowers. Echeveria plants are popularly grown as houseplants due to their low maintenance requirements and attractive foliage.