Ab‐er″rant (�), a. [L. aberrans, -rantis, p. pr. of aberrare. See Aberr.] 1. Wandering; straying from the right way.
2. (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.
Darwin.