The
act of wandering; deviation, especially from truth or moral rectitude, from
the natural state, or from a type.
A partial alienation of reason.
A small periodical change of
position in the stars and other heavenly bodies, due to the combined effect
of the motion of light and the motion of the observer; called annual
aberration, when the observer's motion is that of the earth in its
orbit, and daily or diurnal aberration, when of the earth on
its axis; amounting when greatest, in the former case, to 20.4'', and in
the latter, to 0.3''. Planetary aberration is that due to the motion
of light and the motion of the planet relative to the earth.
The convergence to different foci,
by a lens or mirror, of rays of light emanating from one and the same
point, or the deviation of such rays from a single focus; called
spherical aberration, when due to the spherical form of the lens or
mirror, such form giving different foci for central and marginal rays; and
chromatic aberration, when due to different refrangibilities of the
colored rays of the spectrum, those of each color having a distinct
focus.
The passage of blood or other
fluid into parts not appropriate for it.
The producing of an unintended
effect by the glancing of an instrument, as when a shot intended for A
glances and strikes B.
In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 
