sesquizygotic

English

Etymology

From sesqui- +‎ zygotic.

Adjective

sesquizygotic (comparative more sesquizygotic, superlative most sesquizygotic)

  1. Describing twins which are "semi-identical", formed from one egg fertilised by two separate sperm.
    • 2019, Nicolas Davis, The Guardian, 27 February:
      Gabbett said that while there might be other, unreported, cases of sesquizygotic twins, it remains a very unusual phenomenon.
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