Etymology tree
Proto-Indo-European *h₁eǵʰs
Proto-Italic *eks
Latin ex
Latin ex-
Proto-Indo-European *wokʷ-der.
Latin vocō
Latin ēvocōlbor.
Spanish evocar
Learned borrowing from Latin ēvocāre (“to callout, summon”), from ex- (“out”) + vocāre (“to call”), from vōx (“voice”).