adj ing or continuing through the year; as, perennial fountains.
2. perennial ·adj continuing more than two years; as, a perennial steam, or root, or plant.
3. perennial ·adj continuing without cessation or intermission; perpetual; unceasing; never failing.
4. perennial ·noun a perennial plant; a plant which lives or continues more than two years, whether it retains its leaves in winter or not.