Pronunciation: (pur-pech'OO-ul),[key] —adj. 1. continuing or enduring forever; everlasting.
2. lasting an indefinitely long time: perpetual snow. 3. continuing or continued without intermission or interruption; ceaseless: a perpetual stream of visitors all day. 4. blooming almost continuously throughout the season or the year.
—n. 1. a hybrid rose that is perpetual.
2. a perennial plant.