observable
adj. B2 Upper Intermediate US //əbˈzɝvəbəɫ// UK //ɒbzˈɜːvəbəl// ob·serv·able
adj. able to be seen or noticed. You use this to describe things that you can measure or watch with your eyes.
adj. capable of being seen, noticed, or measured. Often used in scientific contexts to distinguish empirical evidence from theoretical concepts.
The moon is clearly observable tonight.
Scientists look for observable changes in the atmosphere to predict how the weather might shift over the next few days.
While the underlying mathematical models are abstract, the theory remains grounded in observable phenomena that can be verified through repeated experimentation in a controlled laboratory setting.
From observe + -able.
Usage
Often used predicatively after linking verbs like 'be' or 'become', or attributively before a noun.