Definitions for "Perennial"
ing or continuing through the year; as, perennial fountains.
Continuing without cessation or intermission; perpetual; unceasing; never failing.
Continuing more than two years; as, a perennial steam, or root, or plant.
Keywords:  encarta
Stream - a stream that flows continuously during both wet and dry times. See also ephemeral and intermittent streams.
Blossoming annually; continuous, undying
Keywords:  asl, browser
ASL Browser
lasting an indefinitely long time; suggesting self-renewal; "perennial happiness"
recurring again and again; "perennial efforts to stipulate the requirements"