The Collaborative International Dictionary
Terminableness
Terminable \Ter"mi*na*ble\ (-m[i^]n*[.a]*b'l), a. [See Terminate.] Capable of being terminated or bounded; limitable. -- Ter"mi*na*ble*ness, n.
Terminable annuity, an annuity for a stated, definite number of years; -- distinguished from life annuity, and perpetual annuity.
Wiktionary
terminableness
n. The quality of being terminable.