verb/aθeˈɾaɾ/
to harden, to steel; to make sharp
Etymology tree Proto-Indo-European *h₂eḱ- Proto-Indo-European *-éh₁ti Proto-Indo-European *-yeti Proto-Indo-European *-éh₁yeti Proto-Indo-European *h₂eḱéh₁yeti Proto-Italic *akēō Latin aceō Proto-Italic *-jēs Latin -iēs Latin aciēs Proto-Indo-European *-yósder. Proto-Italic *-āzios Latin -ārius Proto-Indo-European *-om Proto-Italic *-om Latin -um Latin -ārium Late Latin aciārium Old Spanish azero Spanish acero Spanish -ar Spanish acerar From acero (“steel”) + -ar.