【医】 难免性出血(如前置胎盘的出血)

Unavoidable \Un`a*void"a*ble\, a.
1. Not avoidable; incapable of being shunned or prevented;
inevitable; necessary; as, unavoidable troubles.

2. (Law) Not voidable; incapable of being made null or void.
--Blackstone.

{Unavoidable hemorrhage} (Med.), hemorrhage produced by the
afterbirth, or placenta, being situated over the mouth of
the womb so as to require detachment before the child can
be born.
※ -- {Un`a*void"a*ble*ness}, n. --
{Un`a*void"a*bly}, adv.