Zero

Zero, a word of Arab origin signifying a cipher, and employed to denote a neutral point in scale between an ascending and descending series, or between positive and negative.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Zermatt * Zeus
Zend
Zend-Avesta
Zenith
Zeno
Zeno
Zenobia
Zephaniah
Zephon
Zephyrus
Zermatt
Zero
Zeus
Zeuss, Johann Kaspar
Zeuxis
Zidon
Ziethen, Johann Joachim von
Zig
Zillerthal
Zimbabye
Zimmermann, Johan Georg von
Zindikites