The process of subjecting something to atmolysis; gas separation through a porous medium.
From 'atmolysis' plus the suffix '-ation' (forming nouns of action or process). This technical chemistry term names the action of applying atmolysis to separate or analyze gases.
The '-ation' suffix is one of English's most productive—you can add it to verbs to create nouns describing the action, which is how chemists rapidly generated technical vocabulary as they discovered new processes.
Complete word intelligence in one call. Free tier — 50 lookups/day.