The Collaborative International Dictionary
Chance of survivorship
Survivorship \Sur*viv"or*ship\, n. 1. The state of being a survivor.
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.
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.