Z Stock Exchange Abbreviation

Zenith

 The point on the celestial sphere directly above the observer. Opposite the nadir. The point directly overhead of an observer.

Zepto

Zepto is the prefix associated with x10^-21 and is denoted by the symbol z.

Zorro

Zusammen

Zygorhynchus

Zebra

In medicine, a very unlikely diagnostic possibility. It comes from an old saying used in teaching medical students about how to think logically in regard to the differential diagnosis: When you hear hoof beats, think of horses, not zebras.