1. of, relating to, or belonging to the cactus family (Cactaceae)
Usage: botanical term

Examples

• The cactaceous plants in the desert garden require very little water.
• Cactaceous species are well adapted to arid climates.
• The botanist studied the cactaceous flora of the southwestern United States.
• Many cactaceous plants have thick, fleshy stems for water storage.
• The greenhouse contains a collection of rare cactaceous specimens.