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zizz
zloty
zm
Zmodem
Zn
zo
zo-
zoarium
zod.
zodiac
zodiacal constellation
zodiacal light
zoetrope
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zircon
zir·con [ zúr kòn ]


noun 
Definition:
 
hard mineral containing zirconium: a very hard zirconium silicate mineral. Use: source of zirconium, gems.
[Late 18th century. < German Zirkon]
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