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Gram's stain

(Encyclopedia)Gram's stain, laboratory staining technique that distinguishes between two groups of bacteria by the identification of differences in the structure of their cell walls. The Gram stain, named after its...

feldspar

(Encyclopedia)feldspar fĕlˈspär [key], an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron...

blood bank

(Encyclopedia)blood bank, site or mobile unit for collecting, processing, typing, and storing whole blood, blood plasma and other blood constituents. Most hospitals maintain their own blood reserves, and the Americ...

wapiti

(Encyclopedia)wapiti wŏpˈĭtē [key], large North American deer, Cervus canadensis, closely related to the Old World red deer. It is commonly called elk in America although the name elk is used in Europe to refer...

streptococcus

(Encyclopedia)streptococcus strĕpˌtəkŏkˈəs [key], any of a group of gram-positive bacteria, genus Streptococcus, some of which cause disease. Streptococci are spherical and divide by fission, but they remain ...

Delhi

(Encyclopedia)Delhi dĕlˈē [key], union territory and city, N central India. The union territory, officia...

Taxco

(Encyclopedia)Taxco täsˈkō [key], town (1990 pop. 43,836), Guerrero state, S Mexico. Founded in 1529 as a silver-mining community, Taxco was also an important stop between Mexico City and Acapulco in Spanish col...

Spectral Classes for Main Sequence Stars (table)

(Encyclopedia)Characteristics of Spectral Classes for Main Sequence Stars ...

Scottish deerhound

(Encyclopedia)Scottish deerhound, breed of tall hound developed in Scotland in the 16th and 17th cent. It stands from 28 to 32 in. (71.1–81.3 cm) high at the shoulder and weighs from 75 to 110 lb (34.0–49.9 kg)...

Sender, Ramón José

(Encyclopedia)Sender, Ramón José rämōnˈhōsāˈsāndĕrˈ [key], 1902–82, Spanish novelist. A journalist, Sender fought on the side of the Loyalists in the Spanish civil war. He left Spain in 1938 and became...