ETYM Named after Andrew Dahl a Swedish botanist.
Any of several plants of or developed from the species Dahlia pinnata having tuberous roots and showy rayed variously colored flower heads; native to the mountains of Mexico and Central America and Colombia; SYN. Dahlia pinnata.
Any perennial plant of the genus Dahlia, family Compositae, comprising 20 species and many cultivated forms. Dahlias are stocky plants with showy flowers that come in a wide range of colors. They are native to Mexico and Central America.