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inorganic chemistry

(Encyclopedia)inorganic chemistry, the study of all the elements and their compounds with the exception of carbon and its compounds, which fall under the category of organic chemistry. Inorganic chemistry investiga...

yarn

(Encyclopedia)yarn, fibers or filaments formed into a continuous strand for use in weaving textiles or for the manufacture of thread. A staple fiber, such as cotton, linen, or wool, is made into yarn by carding, co...

goldfish

(Encyclopedia)goldfish, freshwater fish, genus Carassius, of the family Cyprinidae, popular in aquariums and ponds. Native to China, it was first domesticated centuries ago from the wild form, an olive-colored carp...

Garden, Alexander

(Encyclopedia)Garden, Alexander, c.1730–1791, Scottish-American naturalist and physician, b. Aberdeenshire, Scotland. He settled in Charleston, S.C., where he collected mineral, plant, and animal specimens and di...

anglesite

(Encyclopedia)anglesite ăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the orthorhombic system and o...

arrowroot

(Encyclopedia)arrowroot, any plant of the genus Maranta, usually large perennial herbs, of the family Marantaceae, found chiefly in warm, swampy forest habitats of the Americas and sometimes cultivated for their or...

divining rod

(Encyclopedia)divining rod or dowser, stick used in searching for underground water or minerals. This form of divination is still in common use in many parts of the world. The instrument is typically a forked twig....

chrysoberyl

(Encyclopedia)chrysoberyl krĭsˈəbĕrˌĭl [key] [Gr.,=golden beryl], a beryllium aluminate used as a gem. It has a vitreous luster and is transparent to translucent. The more valuable cat's-eye is a variety of c...

antioxidant

(Encyclopedia)antioxidant, substance that prevents or slows the breakdown of another substance by oxygen. Synthetic and natural antioxidants are used to slow the deterioration of gasoline and rubber, and such antio...

Baeyer, Adolf von

(Encyclopedia)Baeyer, Adolf von (Johann Friedrich Wilhelm Adolf von Baeyer) äˈdôlf fən bāˈyər; yōhänˈ frēˈdrĭkh vĭlˈhĕlm [key], 1835–1917, German chemist. He taught at Berlin and Strasbourg and in...