Decondensation is a related term of decondensed.

In cytology|lang=en terms the difference between decondensation and decondensed

is that decondensation is (cytology) a loosening of the texture of chromatin while decondensed is (cytology) describing chromatin that has a loosened texture.

As a noun decondensation

is (cytology) a loosening of the texture of chromatin.

As an adjective decondensed is

(cytology) describing chromatin that has a loosened texture.