Definitions

from The Century Dictionary.

  • noun A source of light or a source from which any system of waves emanates, the dimensions of which are so small that the waves may be regarded as emanating from a single point in space.

Etymologies

Sorry, no etymologies found.

Support

Help support Wordnik (and make this page ad-free) by adopting the word point-source.

Examples

  • It has reduced point-source pollution and increased allocative efficiency, but monitoring and enforcements costs are the same or higher, dirty plants become more concentrated, market power can prevent entry of cleaner plants, and the whole system is controlled by corporations with an incentive to fraud, politically aided and abetted by the government.

    Environmentalist Forecasting Model, Arnold Kling | EconLog | Library of Economics and Liberty 2009

  • He said signs point to the outbreak being a "point-source" event, in which people were infected during a short period of time, because there was a sharp increase and then sharp decrease in illnesses, he said.

    Germany Now Says Sprouts Are to Blame for Outbreak Laura Stevens 2011

  • He said signs point to the outbreak being a "point-source" event, in which people were infected during a short period of time, because there was a sharp increase and then sharp decrease in illnesses, he said.

    Germany Now Says Sprouts Are to Blame for Outbreak Laura Stevens 2011

  • The brightness of any point-source illumination diminishes rapidly with distance.

    Archive 2010-06-01 James Gurney 2010

  • The most popular are starlight filters, which refract and channel point-source light to create long projections from the light.

    Quick tips to shoot holiday lights 2007

  • Using the maximum depth-of-field produces a natural streaking of light from point-source lights.

    Quick tips to shoot holiday lights 2007

  • More than 500 sewage plants were destroyed, more than 170 point-source leakages of gasoline, oil, or natural gas, more than 2000 gas stations submerged, several chemical plants, 8 oil refineries, and a superfund site was submerged. 8 million gallons of oil were spilled.

    Hurricane Dubya Four Years On 2009

  • Fog refracts point-source lights and adds a nice "glow" to the light.

    How to shoot holiday lights 2007

  • Diatom and chrysophyte algal response to long-term PCB contamination from a point-source in northern Labrador, Canada.

    Historical changes in freshwater ecosystems in the Arctic 2009

  • Fog refracts point-source lights and adds a nice "glow" to the light.

    Quick tips to shoot holiday lights 2007

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.