1. (of plants) blooming every year
1. This is a perennial plant, so we will see its flowers again next year.
2. perpetual; lasting; constant
2. I'm tired of hearing your perennial complaints about how miserable your life is.
per (through)#annus (year) (Latin)
enduring, immutable, perennial
ephemeral, evanescent, transient, transitory
Per is the prefix of " through", Ennial is the root word of year -->perennial means ' through out the year. ' per annual sounds like PURANI (old). purani things are perennial if you remember we have learnt about perennial rivers in social studies which means LONG LASTING rivers