Adjective: indeterminable ,in-di'tur-mu-nu-bul
- Not capable of being definitely decided or ascertained
"The exact cause of the phenomenon remained indeterminable";
- undeterminable
- Incapable of being definitely ascertained or calculated
"The exact age of the artifact was indeterminable"
See also: incalculable, indeterminate, unascertainable, undetermined, undiscoverable, unpredictable
Antonym: determinable
Encyclopedia: Indeterminable