not precisely determined or established; not fixed or known in advance
Of indeterminate age. A zillion is a large indeterminate number. An indeterminate point of law. The influence of environment is indeterminate. An indeterminate future.
source: WordNet 3.0
adjective satellite
not brought to a conclusion; subject to further thought
An open question. Our position on this bill is still undecided. Our lawsuit is still undetermined.