evolution

noun
B2+
OPAL
1
B2+
the slow steady development of plants, animals, etc. during the history of the earth, as they adapt to changes in their environment
فرگشت, تکامل زیستی
2
B2+
the slow steady development of something
تحول, تکامل, فرگشت
In politics Britain has preferred evolution to revolution
cultural trends and evolutions