Blood baptism

Related to Blood baptism: Baptism by fire
(Eccl. Hist.) the martyrdom of those who had not been baptized. They were considered as baptized in blood, and this was regarded as a full substitute for literal baptism.

See also: Blood

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
To put it plainly, descriptions such as "child baptism", "infant baptism", "believers' baptism", "adult baptism" -- but also "water baptism", "Spirit baptism", the "baptism of illumination", "blood baptism" -- always relate to analytically demonstrable (and therefore visible) circumstances, and this is where clashes arise.
Ruthlessly putting down the second Chechen uprising (1999-2000) was the blood baptism of the new leader rising from the intelligence community's dungeons.
While both of the play's shamans experience a blood baptism as an introduction to their vocation, Bynum's clearly alludes to Christ's blood.