Zebra
Meaning: an African animal of the horse family, with black and white stripes all over its body
Zirconium
Meaning: a hard metallic chemical element
Sentence: Most of the zirconium produced today is used in water-cooled nuclear reactors.
ZEALOUS
Meaning: showing great energy or enthusiasm in pursuit of a cause or objective.
Zymoscope
Meaning: an apparatus for determining the fermenting power of yeast by measuring the amount of carbon dioxide evolved from a given quantity of sugar
Sentence: International Scientific Vocabulary zym- + -scope
Zygote
Meaning: Biology. Cell formed by the union of two gametes. [greek zugotos yoked: related to *zeugma]'
Sentence: In biology class, we learned that a zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction.