from
The Collaborative International Dictionary of English v.0.48
Infralapsarian \In`fra*lap*sa"ri*an\, n. [Infra + lapse: cf. F.
infralapsaire. See {Lapse}.] (Eccl. Hist.)
One of that class of Calvinists who consider the decree of
election as contemplating the apostasy as past and the elect
as being at the time of election in a fallen and guilty
state; -- opposed to {Supralapsarian}. The former considered
the election of grace as a remedy for an existing evil; the
latter regarded the fall as a part of God's original purpose
in regard to men.
[1913 Webster]