Intersex is a term that is used for a variety of conditions where a human or animal is born with either external or internal sexual anatomy which are quite different from that of a typical male or female.
The person has the chromosomes of a man, but the external genitals are incompletely formed, ambiguous, or clearly female. Internally, testes may be normal, malformed, or absent. This condition is also called 46, XY with undervirilization. It used to be called male pseudohermaphroditism.
Intersex is a group of conditions where there is a discrepancy between the external genitals and the internal genitals (the testes and ovaries). The older term for this condition is hermaphroditism.