1. unobservable - Noun
2. unobservable - Adjective
3. unobservable - Adjective Satellite
not accessible to direct observation
Source: WordNetAlthough parts of the constellation technically rise above the horizon to observers between the 49°N and 65°N, stars within a few degrees of the horizon are to all intents and purposes unobservable. Source: Internet
An image taken at the Anglo-Australian Telescope in 1993 was found to show the then-unnoticed comet some 13 AU from the Sun, citation a distance at which most comets are essentially unobservable. Source: Internet
Diastolic blood pressure is non-palpable and unobservable by tactile methods, occurring between heartbeats. Source: Internet
In this view, the uniformity of scientific laws is an unprovable postulate which enables scientists to extrapolate into the unobservable past. Source: Internet
Heisenberg's paper did not admit any unobservable quantities like the exact position of the electron in an orbit at any time; he only allowed the theorist to talk about the Fourier components of the motion. Source: Internet
If a state is not observable, the controller will never be able to determine the behaviour of an unobservable state and hence cannot use it to stabilize the system. Source: Internet