procedure used to decrease the chance of a particular genetic condition for
which the fetus is specifically at risk by testing one cell removed from
early embryos conceived by in vitro fertilization and transferring to the
mother's uterus only those embryos determined not to have inherited the mutation
Definition from: GeneReviews
from the University of Washington and the National Center for Biotechnology Information
Related discussion in the Handbook
See also Understanding Medical Terminology.