unobservable
UK/ʌnəb'zɜːvəb(ə)l/US/'ʌnәb'zә:vәbl/
C2
Definitions
adj.
Not able to be seen or observed
无法观察到的；不可见的
Root Breakdown
Root-derivedun-not, reversal
+
observableagainst, toward, in the way of
=unobservable
un- ('not') + observable = not observable. Points back to observable.
Example Sentences
- 1.
In physics, some quantities are unobservable in principle.