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tortoiseshell

(Encyclopedia)tortoiseshell, horny, translucent, mottled plates covering the carapace of the tropical hawksbill turtle. The plates, too thin for most purposes in their original form, are usually built up in layers ...

's Hertogenbosch

(Encyclopedia)'s Hertogenbosch sĕrˌtōkhənbôsˈ [key], Fr. Bois-le-Duc, city (1994 pop. 95,448), capital of North Brabant prov., S central Netherlands, at the confluence of the Dommel and Aa rivers. It is an in...

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...

tryptophan

(Encyclopedia)CE5 tryptophan trĭpˈtəfăn [key], organic compound, one of the 20 amino acids commonly found in animal proteins. Only the l-stereoisomer appears in mammalian protein. It is one of several essent...

grammar

(Encyclopedia)grammar, description of the structure of a language, consisting of the sounds (see phonology); the meaningful combinations of these sounds into words or parts of words, called morphemes; and the arran...

National Socialism

(Encyclopedia)National Socialism or Nazism, doctrines and policies of the National Socialist German Workers' party, which ruled Germany under Adolf Hitler from 1933 to 1945. In German the party name was Nationalsoz...

hotbed

(Encyclopedia)hotbed, low, glass-covered frame structure for starting tender plants. It differs from a cold frame only in that the soil is heated—either artificially as by underground electric wiring or steampipe...

ablaut

(Encyclopedia)ablaut äpˈlout [key] [Ger.,=off-sound], in inflection, vowel variation (as in English sing, sang, sung, song) caused by former differences in syllabic accent. In a prehistoric period the correspondi...

Mulliken, Robert Sanderson

(Encyclopedia)Mulliken, Robert Sanderson, 1896–1986, American chemist, b. Newburyport, Mass., Ph.D. Univ. of Chicago, 1921. Mulliken taught at New York Univ. from 1926 to 1928 and then at the Univ. of Chicago fro...

Murdock, George Peter

(Encyclopedia)Murdock, George Peter, 1897–1985, American anthropologist, b. Meriden, Conn., grad. Yale (B.A., 1919; Ph.D., 1925). He taught at Yale and later at the Univ. of Pittsburgh, becoming Mellon Professor ...