Definition of: perpetual

(pər·pech′·əl) adjective
1. Continuing unlimited in time.
2. Incessant; ceaseless.
3. Bot. Being in bloom during all or nearly all the year, as certain hybrid flowers.
—noun Any perennial plant; also, any of certain perpetual hybrid roses. [<OF perpetuel <L perpetualis <perpetuus <per- through + petere seek]
—per·pet′u·al·ly adverb
—per·pet′u·al·ness noun Synonyms (adj.): ceaseless, constant, continual, continuous, endless, enduring, eternal, incessant, interminable, lasting, perennial, permanent, sempiternal, unceasing, unending, unfailing, unintermitted, uninterrupted. See CONTINUAL, ETERNAL, PERMANENT. Antonyms: see synonyms for TRANSIENT.