what is a rainforest definition
Carlos NavajasStone/Getty Images. Rainforest is a term for a forest of broad-leaved evergreen trees that receives high annual rainfall and is characteristically associated with tropical and subtropical regions of the world.arlos NavajasStone/Getty Images. Rainforest is a term for a forest of broad-leaved evergreen trees that receives high annual rainfall and is characteristically associated with tropical and subtropical regions of the world.