Etymograph

English

kirwanite

From Kirwan + -ite.

Formed from Kirwan + -ite

Irish Ó Ciardhubháin ‘descendant of Ciardhubhán’

English Kirwan

Today it means

noun A form of chlorite associated with basalt in the north of Ireland

Language periods are conventional ranges, not dates for this word.

Etymograph / kirwanite