To put it more simply, the Dictionary reflects the language, the language does not reflect the dictionary. Words in common usage seldom reflect their technical usage.
Anyone with even a small understanding of Evolution and its relation to genetics would understand that de-evolution, or devolution as some say, would take a reversal in the sequence of mutations and selection that occurred in the originating evolutionary path. De-evolution is used in common language by those with little understanding.
Bossy, bossy.
Just because you can put together a list of definitions (that nobody reads) doesn't mean you've set the terms. Common usage will prevail.