the archives of a newspaper or magazine
material used for refilling an excavation. to refill (an excavation). Historical Examples These also were temporarily useless, because there had been no dredging in front of them, or backfilling in their rear. The Philippines Past and Present (Volume 2 of 2) Dean Conant Worcester verb (transitive) to refill an excavated trench, esp (in archaeology) at […]
- Background extinction
background extinction background extinction (bāk’ground’) The ongoing extinction of individual species due to environmental or ecological factors such as climate change, disease, loss of habitat, or competitive disadvantage in relation to other species. Background extinction occurs at a fairly steady rate over geological time and is the result of normal evolutionary processes, with only a […]
- Background processing
noun (computing) the ability of a system to perform a low-priority task while, at the same time, dealing with a main application
- Background radiation
noun See cosmic background radiation background radiation back·ground radiation (bāk’ground’) n. Relatively constant low-level radiation from environmental sources such as building materials, cosmic rays, and ingested radionucleides in the body. Low-level radiation at the surface of the Earth that comes from cosmic rays and from small amounts of radioactive materials in rocks and the atmosphere.