Trouble getting pregnant (infertility) in someone who has never had a successful pregnancy. Although the exact definition can vary among gynecologists, the differentiation between primary infertility and secondary infertility is most useful if a prior ectopic pregnancy or a prior miscarriage is consistent with the state of primary infertility, whereas a prior induced abortion (which, the odds are, would otherwise have developed normally) means the state is secondary infertility. See also: primary