Term: background radiation: radiation coming from sources other than those being observed
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: orthodox judaism: beliefs and practices of a Judaic sect that strictly observes Mosaic law
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: cider mill: mill that extracts juice from apples to make apple cider
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: rupicapra: chamois
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: bladderwrack: a common rockweed used in preparing kelp and as manure
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: goldbrick: a soldier who performs his duties without proper care or effort
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: smooth alder: common shrub of the eastern United States with smooth bark
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: sapindaceae: chiefly tropical New and Old World deciduous and evergreen trees and shrubs bearing leathery drupes with yellow translucent flesh; most plants produce toxic saponins
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: fringed loosestrife: of North America
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: explosive trace detection: a system for screening luggage in airports; an agent passes a swab around or inside luggage and then runs the swab through a machine that can detect trace amounts of explosives
Broader: background: extraneous signals that can be confused with the phenomenon to be observed or measured | Unrelated: pneumococcal pneumonia: pneumonia caused by bacteria of the genus pneumococcus