permanent
/ˈpər-mə-nənt/
adjective
continuing or enduring without fundamental or marked change : stable
not easily removed, washed away, or erased : indelible
making marks that cannot easily be removed : indelible
the museum's permanent art collection
noun
a long-lasting hair wave produced by mechanical and chemical means —called also permanent wave
noun
a magnet that retains its magnetism after removal of the magnetizing force