biosib

From bio- +‎ sib.

biosib (plural biosibs)

1. A biological sibling.
   • 2002, Peter K. Gerlach, Build a Co-parenting Team: After Divorce or Re/marriage (volume 6 of the Stepfamily inFormation Series), Xlibris, →ISBN:

     Adjust their _ identity, _ power, _ loyalties, and _ “rank” in their _ home/s and _ stepfamily each time _ their co-parents have a new child (i.e. a half-sib); or _ a biosib or stepsib moves in or out of their home; or _ a key person dies, moves away, re/marries, or re/divorces.

   • 2011, Liane Shaw, Fostergirls, Second Story Press, →ISBN, page 149:

     She has to deal with sharing her mom with kids who aren’t even her biosibs.

   • 2012, Michael Beenstock, “Empirical Knowledge on the Causes of Correlations within the Family”, in Heredity, Family, and Inequality: A Critique of Social Sciences, Cambridge, Mass., London: The MIT Press, →ISBN, page 248:

     The logic behind this argument is the same as the logic of behavioral genetics, in which comparisons are made between MZ and DZ twins and biosibs and adopted siblings. […] For example, the equal-environments assumption (EEA) is unlikely to apply to orphans and non-orphans, just as it is unlikely to apply to MZ and DZ twins or to biosibs and adopted siblings.

• biosibling