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Nielsen, A. C.

(Encyclopedia)Nielsen, A. C. (Arthur Charles Nielsen) nēlˈsən [key], 1897–1980, American market researcher, b. Chicago, grad. Univ. of Wisconsin, Madison (B.S., 1918). He worked as an electrical engineer befor...

packaging

(Encyclopedia)packaging, containment and packing prior to sale with the primary purpose of facilitating the purchase and use of a product. Before 1800 packaging was restricted almost entirely to containment for shi...

nephritis

(Encyclopedia)nephritis nəfrīˈtəs [key], inflammation of the kidney. The earliest finding is within the renal capillaries (glomeruli); interstitial edema is typically followed by interstitial infiltration of ly...

tetracycline

(Encyclopedia)tetracycline tĕˌtrəsīˈklēn [key], any of a group of antibiotics produced by bacteria of the genus Streptomyces. Effective against a wide range of Gram positive and Gram negative bacteria, tetrac...

yew

(Encyclopedia)yew, name for evergreen trees or shrubs of the genus Taxus, somewhat similar to hemlock but bearing red berrylike fruits instead of true cones. Of somber appearance, with dark green leaves, the yew si...

Helen

(Encyclopedia)Helen, in Greek mythology, the most beautiful of women; daughter of Leda and Zeus, and sister of Castor and Pollux and Clytemnestra. While still a young girl Helen was abducted to Attica by Theseus an...

vasectomy

(Encyclopedia)vasectomy, male sterilization by surgical excision of the vas deferens, the thin duct that carries sperm cells from the testicles to the prostate and the penis. Vasectomy is a popular method of birth ...

ACE inhibitor

(Encyclopedia)ACE inhibitor ănˌjēōtĕnˈsĭn [key], drug used to reduce elevated blood pressure (see hypertension), to treat congestive heart failure, and to alleviate strain on hea...

Luciano, Lucky

(Encyclopedia)Luciano, Lucky (Charles Luciano), 1896–1962, American crime boss, b. near Palermo, Sicily, as Salvatore Luciana. His family emigrated in 1906, settling in New York City, where he almost immediately ...

homelessness

(Encyclopedia)homelessness, the condition of not having a permanent place to live, widely perceived as a societal problem only beginning in the 1980s. Figures for the number of homeless people in the United States ...