zygoma |zaɪˈɡəʊmə| — the slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal bone

zygomata |zaɪˈɡəʊmətə| — plural form of zygoma

zyme  — A ferment.

zymosis |zaɪˈməʊsɪs| — a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol

zymotic |zaɪˈmɑːtɪk| — of or relating to or causing fermentation