sexer

noun

one who determines sex, especially of animals

Wiktionary

Pronunciation: /ˈsɛksə(ɹ)/

noun

Etymology: Etymology tree English sex Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English sexer From sex + -er.

One who determines the sex of living things.