semi-identical

Adjective

 * 1)  Being the result of two sperm cells fertilizing a single egg, which then splits into two embryos, sharing all of the mother's genetic material but only half of the father's.
 * 2)  Being the result of two sperm cells each fertilizing a split egg, where one fertilizes the major egg body and another fertilizes the minor polar body.

Translations

 * Danish: enægget med to spermier
 * Esperanto: duonidenta