from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A sister to whom one is biologically related through one parent only.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The daughter of one's mother who has a different father, maternal half sister, uterine sister
- n. The daughter of one's father who has a different mother, paternal half sister.
King Wyborn of Galea had had two children with his queen and first wife, so Kahlan had both an older half sister and a half brother.
 Mr. Wickham married Mr. Tazewell's aunt, a half sister of Judge Henry Tazewell.
The Macedonian king was so grateful that he promised Langarus his half sister Cyna in marriage when he returned.
Hettiah, Omorts half sister and Sabines arch-nemesis, arrived then, hastening up the dais steps to stand beside Omorts throneher rightful place, since she was his concubine as well as his relation.
Bin Laden encouraged Khalifa to marry his half sister Shaikha, to whom he is close, as she is the other particularly religiously observant member of his family.