VERB (2)

1. diverge from the expected;
- Example: "The President aberrated from being a perfect gentleman"

2. diverge or deviate from the straight path; produce aberration;
- Example: "The surfaces of the concave lens may be proportioned so as to aberrate exactly equal to the convex lens"

The Collaborative International Dictionary of English v.0.48:

Aberrate \Ab"er*rate\, v. i. [L. aberratus, p. pr. of aberrare;
   ab + errare to wander. See Err.]
   To go astray; to diverge. [R.]
   [1913 Webster]

         Their own defective and aberrating vision. --De
                                                  Quincey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

aberrate
    v 1: diverge from the expected; "The President aberrated from
         being a perfect gentleman"
    2: diverge or deviate from the straight path; produce
       aberration; "The surfaces of the concave lens may be
       proportioned so as to aberrate exactly equal to the convex
       lens"