| zirconia | (noun) a white crystalline oxide; used in refractories and in insulation and abrasives and enamels and glazes | Synonyms: zirconium dioxide, zirconium oxide |
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| zooerastia | (noun) sexual activity between a person and an animal | Synonyms: bestiality, sodomy, zooerasty |
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| zoophilia | (noun) a sexual attraction to animals | Synonyms: zoophilism |
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| zoophobia | (noun) a morbid fear of animals | - |
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| zoopsia | (noun) visual hallucination of animals; sometimes occurring in delirium tremens | - |
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| zoysia | (noun) any of several creeping grasses of the genus Zoysia | - |
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