ZIRCON
\zˈɜːkən], \zˈɜːkən], \z_ˈɜː_k_ə_n]\
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a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent
By Princeton University
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a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent
By DataStellar Co., Ltd
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One of the gems; a heavy, hard, sparkling mineral, more or less transparent, found colourless and of various colours-when colourless they are often sold as diamonds, when red they are called hyacinths.
By Stormonth, James, Phelp, P. H.
Word of the day
Questionnaire Designs
- Predetermined sets of questions used collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.