half sister

Found in Anh - Anh (Wordnet)

Definition Noun A female sibling who shares one biological parent with you, but not both. This relationship occurs when two people have either the same mother but different fathers, or the same father but different mothers. Usage The term "half sister" is used to specify a familial relationship that is genetically half as close as that of a full sister. It is a neutral, factual term commonly us...