noun which may take the genitive case particle 'no', noun
half- (sibling by a different mother); paternal half-sibling
Refers specifically to siblings who share the same father but have different mothers. The term is used as a noun or with の to modify another noun (e.g., 腹違いの兄弟).
See also: 種違い
He has an older half-brother by a different mother.
The paternal half-sisters get along well.