Noun
Originally
,
a
property
of
amber
and
certain
other
nonconducting
substances
to
attract
lightweight
material
when
rubbed
,
or
the
cause
of
this
property
;
now
understood
to
be
a
phenomenon
caused
by
the
distribution
and
movement
of
charged
subatomic
particles
and
their
interaction
with
the
electromagnetic field
.