noun, noun which may take the genitive case particle 'no'
unrelated by blood; step-relationship
Refers to a relationship where the people involved are not biologically related, often used in the context of step-families or adoptive relationships. The phrase is somewhat literary and fixed.
She raised the children, who were not her own by blood, as if they were her real children.
Precisely because they are not blood-related, there are times when one must be considerate.
Standard spelling using kana for the verb part and kanji for 仲.
Kanji spelling using 生 for 'give birth'; less common and may be considered archaic or literary.
Formed from なさぬ, the negative attributive form of なす “to give birth to,” and 仲 “relationship.” It originally denotes a relationship in which parent and child are not related by birth.