1. of, relating to, or resembling grass or the grass family (Gramineae)
Usage: botanical term; formal

Examples

• The gramineous plants in the meadow swayed in the wind.
• Wheat and rice are gramineous crops that feed billions of people.
• The lawn consists of various gramineous species.
• Botanists classify bamboo as a gramineous plant.
• The gramineous structure of the leaf blade is characteristic of the grass family.