Columbia Encyclopedia

Search results

500 results found

disinfectant

(Encyclopedia)disinfectant, agent that destroys disease-causing microorganisms and their spores. Disinfectants, or germicides, are sometimes considered to be substances applied to inanimate bodies, whereas antisept...

dry rot

(Encyclopedia)dry rot, fungus disease that attacks both softwood and hardwood timber. Destruction of the cellulose causes discoloration and eventual crumbling of the wood. This frequently results in the collapse of...

chigger

(Encyclopedia)chigger, minute, six-legged, reddish larva of the harvest mite, one of various red bugs widely distributed throughout the world and common in the S United States. Attaching itself by its mouthparts to...

silicosis

(Encyclopedia)silicosis sĭlĭkōˈsĭs [key], occupational disease of the lungs caused by inhalation of free silica (quartz) dust over a prolonged period of time. Free silica is dispersed in the air and inhaled by...

post-mortem examination

(Encyclopedia)post-mortem examination or autopsy, systematic examination of a cadaver for study or for determining the cause of death. Post-mortems use many methodical procedures to determine the etiology and patho...

pleurisy

(Encyclopedia)pleurisy plo͝orˈĭsē [key], inflammation of the pleura (the membrane that covers the lungs and lines the chest cavity). It is sometimes accompanied by pain and coughing. The inflammation may be dry...

neuritis

(Encyclopedia)neuritis no͝orīˈtĭs, nyo͝o– [key], inflammation of a peripheral nerve, often accompanied by degenerative changes in nervous tissue. The cause can be mechanical (injury, pressure), vascular (occ...

thrush , in medicine

(Encyclopedia)thrush, in medicine, infection caused by the fungus Candida albicans, manifested by white, slightly raised patches on the mucous membrane of the tongue, mouth, and throat. The mucous membrane beneath ...

trichomoniasis

(Encyclopedia)trichomoniasis trĭkˌəmənīˈəsĭs [key], sexually transmitted disease caused by the parasitic protozoan Trichomonas vaginalis. In women, it can cause urinary tract infection and a painful, malodo...

actinomycosis

(Encyclopedia)actinomycosis ăkˌtənōmīkōˈsĭs [key], chronic suppurative infection that occurs around the face and neck. The disease is characterized by the formation of abscesses, or pus-filled cavities, bel...

Browse by Subject