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uranium

(Encyclopedia)uranium yo͞orāˈnēəm [key], radioactive metallic chemical element; symbol U; at. no. 92; mass number of most stable isotope 238; m.p. 1,132℃; b.p. 3,818℃; sp. gr. 19.1 at 25℃; valence +3, +4...

Mersey

(Encyclopedia)Mersey mûrˈzē [key], river, c.70 mi (110 km) long, formed at Stockport, W England, by the confluence of the Etherow and Goyt rivers. It flows east to the Irish Sea near Liverpool. The estuary of th...

aloes

(Encyclopedia)aloes ălˈōz [key], drug obtained from the aloe; also a biblical name for an aromatic substance of various uses, mentioned in connection with myrrh and spices and thought to be the fragrant wood of ...

Dalin, Olof von

(Encyclopedia)Dalin, Olof von o͞oˈlôv fən dälēnˈ [key], 1708–63, Swedish historian, poet, and journalist, the foremost figure of the Swedish Enlightenment. In his successful career in the civil service, Da...

cryotron

(Encyclopedia)cryotron krīˈōtrŏnˌ [key], magnetically controlled electronic switching device that operates at extremely low temperatures; it is designed to supplant, in part, the transistor in special electron...

colorization, motion picture

(Encyclopedia)colorization, motion picture, electronic process that uses computers to add color to black-and-white movies, creating new colored videotape versions. Invented by Canadians Wilson Markle and Brian Hunt...

chamomile

(Encyclopedia)chamomile or camomile both: kămˈəmīlˌ, –mēlˌ [key] [Gr.,=ground apple], name for various related plants of the family Asteraceae (aster family), especially the perennial Anthemis nobilis, the...

felt

(Encyclopedia)felt, fabric made by matting or felting together wool, hair, or fur, most of which have a natural tendency to snarl or cling together owing to their notched or scaly surfaces. Processes of manufacture...

behavior therapy

(Encyclopedia)behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...

range

(Encyclopedia)range, large area of land unsuited to cultivation but supporting native grasses and other plants suitable for livestock grazing. Principal areas in the western hemisphere are the pampas of South Ameri...