Dibling

There could, however, be discrepancies in parents' feelings about meetings within what are sometimes referred to as 'dibling' groups, with some mothers reporting how others had initially been very 'cautious', 'guarded' or 'hesitant'.

[…] donor siblings, diblings are commonplace within Cara and Marlene's crowd.

2018, "Marie", quoted in Marna Gatlin, Carole LieberWilkins, Let's Talk About Egg Donation: Real Stories from Real People I look at my twins often and am amazed at how the one who looks like her egg donor "diblings" looks less like me than the one who looks like her sperm donor "diblings".

Additionally, the bio-genealogical imperative is realized by fertility science in other familiar ways. It has spawned a similarly motivated search movement and, in popular vernacular, “dibling” or “donor-sibling registries,” wherein “donor children” (i.e., born of sperm or egg donation or both) seek their bio-genealogical origins, rights and open records for much the same reason as adoptees.