What is "abrenunciation"

Abrenunciation \Ab`re*nun`ci*a"tion\, n. [LL. abrenuntiatio. See Abrenounce.] Absolute renunciation or repudiation. [Obs.]

An abrenunciation of that truth which he so long had professed, and still believed.
--Fuller.

n. (context archaic English) Absolute renunciation; repudiation; retraction. (First attested in the mid 16^th century.)