Columbia Encyclopedia

Search results

397 results found

benzodiazepine

(Encyclopedia)benzodiazepine bĕnˌzōdīăzˈəpēnˌ [key], any of a class of drugs prescribed for their tranquilizing, antianxiety, sedative, and muscle-relaxing effects. Benzodiazepines are also prescribed for ...

botulism

(Encyclopedia)botulism bŏchˈəlĭzˌəm [key], acute poisoning resulting from ingestion of food containing toxins produced by the bacillus Clostridium botulinum. The bacterium can grow only in an anaerobic atmosp...

breast implant

(Encyclopedia)breast implant, saline- or silicone-filled prosthesis used after mastectomy as a part of the breast reconstruction process or used cosmetically to augment small breasts. An implant consists of a fluid...

urinalysis

(Encyclopedia)urinalysis yo͝orˌənălˈĭsĭs [key], clinical examination of urine for the purpose of medical diagnosis. Urine is initially examined for such characteristics as color, odor, and specific gravity. ...

Guinea-Bissau

(Encyclopedia)CE5 Guinea-Bissau bĭsˌsouˈ [key], officially Republic of Guinea-Bissau, republic (2015 est. pop. 1,771,000), 13,948 sq mi (36,125 sq km), W Africa. It borders on the Atlantic Ocean in the west, ...

sulfur

(Encyclopedia)CE5 Sulfur crystals sulfur or sulphur sŭlˈfər [key], nonmetallic chemical element; symbol S; at. no. 16; interval in which at. wt. ranges 32.059–32.076; m.p. 112.8℃ (rhombic), 119.0℃ (mon...

liposome

(Encyclopedia)liposome līˈpəsōmˌ, lĭpˈə– [key], microscopic, fluid-filled pouch whose walls are made of layers of phospholipids identical to the phospholipids that make up cell membranes. Liposomes are us...

herpes simplex

(Encyclopedia)herpes simplex hûrˈpēz [key], an acute viral infection of the skin characterized by one or more painful, itching blisters filled with clear fluid. It is caused by either of two herpes simplex virus...

cinchona

(Encyclopedia)cinchona chĭngkōˈnə [key], name for species of the genus Cinchona, evergreen trees of the madder family native to the Andean highlands from Bolivia to Colombia and also to some mountainous regions...

Clostridium

(Encyclopedia)Clostridium, genus of gram-positive bacteria (see Gram's stain), several species of which cause significant, potentially deadly diseases in humans as a result of the toxins that each produces. Clostri...