[per-pech-oo-uh l] /pərˈpɛtʃ u əl/
continuing or enduring forever; everlasting.
lasting an indefinitely long time:
"perpetual snow."
continuing or continued without intermission or interruption; ceaseless:
"a perpetual stream of visitors all day."
blooming almost continuously throughout the season or the year.
a hybrid rose that is perpetual.
a perennial plant.
1300–50; late Middle English perpetuall < Latin perpetuālis permanent, equivalent to perpetu(us) uninterrupted (per- per- + pet-, base of petere to seek, reach for + -uus deverbal adj. suffix) + -ālis -al1; replacing Middle English perpetuel < Middle French < Latin as above
Related forms
perpetuality, perpetualness, noun
perpetually, adverb
nonperpetual, adjective
nonperpetually, adverb
quasi-perpetual, adjective
quasi-perpetually, adverb
1. permanent, enduring. See eternal. 3. continuous, incessant, constant, unending, uninterrupted.
1. temporary. 3. discontinuous.
Example Sentences for perpetual
Forget about that perpetual grin made famous by “Flipper” in the 60s.
Another perpetual concern is the volume of e-mail that arrives at the individual sites.
Believe it or not it is a perpetual power machine.
In areas where there is a perpetual moisture problem, do not install carpeting.
There is a perpetual rainbow at the foot of the falls.
Through the many horrors chronicled in this book, that renewal is a perpetual promise.
How did they endure months of perpetual cold and dark?
In the extreme tropics there are no winters or springs, only perpetual midsummer.
But they had the perpetual giggles while shooting scenes together.
The boy wears a striped shirt; his nose, like the gnomon of a sundial, casts a perpetual shadow across his round face.
British Dictionary definitions for perpetual
perpetual (pəˈpɛtjʊəl)
1.  (usually prenominal) eternal; permanent
2.  (usually prenominal) seemingly ceaseless because often repeated: your perpetual complaints
3.  horticulture blooming throughout the growing season or year
4.  (of a crop plant) continually producing edible parts: perpetual spinach
5.  a plant that blooms throughout the growing season
[C14: via Old French from Latin perpetuālis universal, from perpes continuous, from per- (thoroughly) + petere to go towards]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for perpetual
mid-14c., from O.Fr. perpetuel (12c.), from L. perpetualis "universal," in M.L. "permanent," from perpetuus "continuous, universal," from perpetis, gen. of Old L. perpes "lasting," probably from per- "through" + root of petere "to seek, go to, aim at" (see petition). Perpetual motion is attested from 1590s.
Online Etymology Dictionary, © 2010 Douglas Harper
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