Where does “acerar” come from?

acerar (Spanish) comes from Spanish ácero, from Late Latin aciarium, from Latin aciēs, from Latin aceō, from Proto-Italic akēō, from Proto-Indo-European h₂eḱ-éh₁-ye-ti, from Proto-Indo-European h₂eḱ- — sharp.

acerar (Spanish): to harden, to steel; to make sharp

Definitions

to harden, to steel; to make sharp

Ancestry of “acerar”, step by step

Step	Language	Word	Meaning
1	Spanish	ácero	hornless (for vertebrates), antennaless (for arthropods)
2	Late Latin	aciarium	steel
3	Latin	aciēs	sharp edge or point
4	Latin	aceō	to be sour
5	Proto-Italic	akēō	be sharp-tasting, be sour
6	Proto-Indo-European	h₂eḱ-éh₁-ye-ti	—
7	Proto-Indo-European	h₂eḱ-	sharp

Every word from Proto-Indo-European h₂eḱ- →Every word from Proto-Indo-European h₂eḱ-éh₁-ye-ti →Every word from Proto-Italic akēō →