Disjoin, Separate, Unlink, Divorce
This page is the CodyCross answer for the clue below from Physics, Group 1890, Puzzle 4 (Photometer).
Question is: Disjoin, Separate, Unlink, Divorce
and the answer is: DECOUPLE
Word Meaning:
DECOUPLE — (ambitransitive) To unlink; to take apart or come apart.
Definitions from Wiktionary.