母ぼ系けい

noun, noun which may take the genitive case particle 'no'

maternal line; mother's side of the family

Refers to lineage or relatives on the mother's side. Often used in genealogical or anthropological contexts. The antonym is 父系 (paternal line).

See also: 父系

• 彼かれは母ぼ系けいの家か系けいを調しらべている。

  He is researching his maternal lineage.