Meaning : Not subject or susceptible to change or variation in form or quality or nature.
Example :
The view of that time was that all species were immutable, created by God.
Synonyms : changeless
Capable of or tending to change in form or quality or nature.
A mutable substance.Meaning : Constant and unchanging.
Example :
The immutable laws of nature.
Immutable meaning in Bengali (Bangla).