What is the meaning of Perennial?

Lasting or remaining active throughout the year, for multiple years, or all the time.

1. Continuing without cessation or intermission for several years, or for an undetermined or infinite period; neverending or never failing; perpetual, unceasing.

   Continuing without cessation or intermission for several years, or for an undetermined or infinite period; neverending or never failing; perpetual, unceasing.

   Appearing or recurring again and again; recurrent.

   Appearing again each year; annual.

   Of a plant: active throughout the year, or having a life cycle of more than two growing seasons.

   A plant that is active throughout the year, or has a life cycle of more than two growing seasons.

   1. A thing that lasts forever.
   2. A person or thing (such as a problem) that appears or returns regularly.

   A thing that lasts forever.

   A person or thing (such as a problem) that appears or returns regularly.

   Source: wiktionary.org