from
The Collaborative International Dictionary of English v.0.48
Survivorship \Sur*viv"or*ship\, n.
1. The state of being a survivor.
[1913 Webster]
1. (Law) The right of a joint tenant, or other person who has
a joint interest in an estate, to take the whole estate
upon the death of other. --Blackstone.
[1913 Webster]
{Chance of survivorship}, the chance that a person of a given
age has of surviving another of a giving age; thus, by the
Carlisle tables of mortality the chances of survivorship
for two persons, aged 25 and 65, are 89 and 11
respectively, or about 8 to 1 that the elder die first.
[1913 Webster]