a. [ L. indelebilis; pref. in- not + delebilis capable of being destroyed: cf. F. indélébile. See In- not, and Deleble. ] [ Formerly written also indeleble, which accords with the etymology of the word. ] [ 1913 Webster ]

1. That can not be removed, washed away, blotted out, or effaced; incapable of being canceled, lost, or forgotten; as, indelible characters; an indelible stain; an indelible impression on the memory. [ 1913 Webster ]

2. That can not be annulled; indestructible. [ R. ] [ 1913 Webster ]

They are endued with indelible power from above. Sprat. [ 1913 Webster ]

Indelible colors, fast colors which do not fade or tarnish by exposure. --
Indelible ink, an ink not obliterated by washing; esp., a solution of silver nitrate.

Syn. -- Fixed; fast; permanent; ineffaceable.

-- In*del"i*ble*ness, n. -- In*del"i*bly, adv. [ 1913 Webster ]

Indelibly stamped and impressed. J. Ellis. [ 1913 Webster ]