an act or instance of dissociating.

the state of being dissociated; disjunction; separation

the dissociation of church and state.

Physical Chemistry .

the reversible resolution or decomposition of a complex substance into simpler constituents caused by variation in physical conditions, as when water gradually decomposes into hydrogen and oxygen under great heat in such a way that when the temperature is lowered the liberated elements recombine.

electrolytic dissociation.

Psychiatry . the splitting off of a group of mental processes from the main body of consciousness, as in amnesia or certain forms of hysteria.

noun

association , attachment , connection , union

noun

break , disconnection , disengagement , disjunction , distancing , disunion , division , divorce , isolation , segregation , severance