Not subject or susceptible to change or variation in form or quality or nature.
persistent in occurrence and unvarying in nature; "maintained a constant temperature"; "a constant beat"; "principles of unvarying validity"; "a steady breeze"
remaining the same for indefinitely long times
not subject or susceptible to change or variation in form or quality or nature; "the view of that time was that all species were immutable, created by God"
not subject or susceptible to change or variation in form or quality or nature
