observable
/əbˈzɝ.və.bəl/ noun C2- Any physical property that can be observed and measured directly and not derived from other properties. · Temperature is an observable but entropy is derived.
Plural observables
From the library
However, this time, my tranquillity, or passiveness as philosophers say, proceeded from another source; it proceeded from a wish, like a submissive and devoted daughter” (a slight smile was observable on the purple lips of the young girl), “to practice obedience.”
It was then observable that the substance was greenish.
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