agnate

[ag-neyt] /ˈæg neɪt/
noun
1.
a relative whose connection is traceable exclusively through males.
2.
any male relation on the father's side.
adjective
3.
related or akin through males or on the father's side.
4.
allied or akin.
Origin
1525-35; < Latin agnātus paternal kinsman, variant of ad(g)nātus born to (past participle of adgnāscī), equivalent to ad- ad- + -gnā be born + -tus past participle suffix
Related forms
agnatic
[ag-nat-ik] /ægˈnæt ɪk/ (Show IPA), agnatical, adjective
agnatically, adverb
agnation
[ag-ney-shuh n] /ægˈneɪ ʃən/ (Show IPA), noun
British Dictionary definitions for agnate

agnate

/ˈæɡneɪt/
adjective
1.
related by descent from a common male ancestor
2.
related in any way; cognate
noun
3.
a male or female descendant by male links from a common male ancestor
Derived Forms
agnatic (æɡˈnætɪk) adjective
agnation, noun
Word Origin
C16: from Latin agnātus born in addition, added by birth, from agnāsci, from ad- in addition + gnāsci to be born