(Biol.) Deviating from the ordinary or natural type; exceptional; abnormal. "The more aberrant any form is, the greater must have been the number of connecting forms which, on my theory, have been exterminated."
... the whole. It is the antagonism of the soul with God. But the perpetual preservation of a perfectly balanced antagonism with God is inconceivable. It must vary, totter, grow either worse or better. If it grows worse, it will finally destroy itself, the aberrant individuality or malign insurgence vanishing in the totality of force, as the filth of our sewers vanishes purely in the purity of the ocean. If it grows better, its improvement will finally transform the opposition into reconciliation, the evil disappearing ... — The Destiny of the Soul - A Critical History of the Doctrine of a Future Life • William Rounseville Alger