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Spode, Josiah, I
(Encyclopedia) Spode, Josiah, I, 1733–97, English potter. He founded a pottery firm in 1770 at Stoke-on-Trent in the Staffordshire pottery district. Creating many of his patterns after Japanese…color index
(Encyclopedia) color index, in astronomy, difference in an object's brightness as recorded between any two well-defined bands of the electromagnetic spectrum by using optical filters of different…turquoise
(Encyclopedia) turquoise, hydrous phosphate of aluminum and copper, Al2(OH)3PO4·H2O+Cu, used as a gem. It occurs rarely in crystal form, but is usually cryptocrystalline. Turquoise is opaque and has…beryl
(Encyclopedia) berylberylbĕrˈĭl [key], mineral, a silicate of beryllium and aluminum, Be3Al2Si6O18, extremely hard, occurring in hexagonal crystals that may be of enormous size and are usually white…sulphur-bottom whale
(Encyclopedia) sulphur-bottom whale: see blue whale.hyacinth, in botany
(Encyclopedia) hyacinth, any plant of the genus Hyacinthus, bulbous herbs of the family Liliaceae (lily family) native to the Mediterranean region and South Africa. The common, or Dutch, hyacinth of…cupric sulfate
(Encyclopedia) cupric sulfatecupric sulfatek&oomacr;ˈprĭk sŭlˈfāt, ky&oomacr;ˈ– [key] or copper (II) sulfate, chemical compound, CuSO4, taking the form of white rhombohedral crystals or…woad
(Encyclopedia) woad, name for a perennial plant (Isatis tinctoria) of the family Cruciferae (or Brassicaceae; mustard family) and for a blue dye obtained from its leaves. The plant is believed to be…Bahr el Azraq
(Encyclopedia) Bahr el Azraq, river, Sudan: see Blue Nile.Ocean Drilling Program
(Encyclopedia) Ocean Drilling Program: see under Deep Sea Drilling Project.Trending
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