datum line


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Related to datum line: datum point

datum line

- The horizontal or base line, from which the heights of points are reckoned or measured, as in the plan of a railway, etc.
See also related terms for measured.
Farlex Trivia Dictionary. © 2012 Farlex, Inc. All rights reserved.
References in periodicals archive ?
He said through her own efforts, Botswana had been able to reduce the proportion of people living below the national poverty datum line from about 30.6 to 16.3 per cent between 2002/03 and 2015/16, and also from 23.4 per cent to 5.8 per cent for those living in absolute or extreme poverty below the poverty datum line of US$1.90 a day.
Apex Council, the union which represents all government workers, said the government's higher offer on Monday was still below the poverty datum line (PDL) used to assess whether a person is deemed poor.