English word gamete comes from Proto-Indo-European *ǵeme-

Detailed word origin of gamete

Dictionary entry	Language	Definition
*ǵeme-	Proto-Indo-European (ine-pro)
γάμος	Ancient Greek (grc)
γαμέτης	Ancient Greek (grc)
gamete	English (eng)	(cytology) A reproductive cell (sperm in males or eggs in females), having only half of a complete set of chromosomes.