point-source
UK[ˈpɔɪnt sɔːs]US[ˈpɔɪnt sɔːrs]
adj
(of pollution) coming from a single, identifiable place or origin.
n
a single, identifiable, localized source of something, especially pollution.
Morpheme Breakdown
point
source
point
specific location
source
origin
Etymology
The term 'point-source' is a modern English compound formed by combining two nouns, each with a long etymological history. 'Point' traces back to the Latin 'punctum', meaning a prick or a dot, which evolved to signify a precise location. 'Source' originates from the Latin 'surgere', meaning to rise, which came to denote a spring or fountainhead—the starting place from which something flows. In environmental science and related fields, these literal concepts were logically combined in the mid-20th century to create a technical term that precisely identifies pollution or emissions originating from a single, discrete, and identifiable location, as opposed to diffuse or widespread origins.
Analysis
Structure: point (specific location) + source (origin)
- point: From Old French 'point', from Latin 'punctum' (a small hole made by pricking, a point). In this compound, it functions to specify a precise, localized spot.
- source: From Old French 'sourse', from Latin 'surgere' (to rise). In this compound, it functions to denote the place of origin or beginning.
Examples
The factory was identified as a point-source polluter, discharging waste directly into the river.
Environmental regulations are often stricter for point-source emissions than for non-point-source runoff.
The study focused on contaminants from a single point-source, making the data easier to analyze.