The Collaborative International Dictionary
Radicality \Rad`i*cal"i*ty\ (r[a^]d`[i^]*k[a^]l"[i^]*t[y^]), n.
Germinal principle; source; origination. [Obs.]
--Sir T. Browne.Radicalness; relation to a root in essential nature or principle.
Douglas Harper's Etymology Dictionary
1640s, from radical (adj.) + -ity.
Wiktionary
n. 1 The quality of being radical; radicalness. 2 (context obsolete English) Germinal principle; source; origination. 3 (context obsolete English) Radicalness; relation to root in essential nature or principle.
Usage examples of "radicality".
The thought of this initial period, born simultaneously in politics, science, art, philosophy, and theology, demonstrates the radicality of the forces at work in modernity.
The illusion of the naturalness of capitalism and the radicality of the limit actually stand in a relationship of complementarity.