adj ·Rare ·Advanced level

Definitions

Adjective

1. 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. not-comparable
2. 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. not-comparable

Synonyms

All synonyms

half-identical

Etymology

From semi- + identical.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.