Definition: A north-south reference line used in surveying. In the government survey system, a principal meridian works with a base line to organize township and range descriptions.
Example
A land description locates a township west of the principal meridian and north of the base line.
Keep the distinction clear
Meridian is the general term; a principal meridian is the designated reference for a survey region. A range line is part of the township grid.
Related terms
Principal Meridian · Base Line (Surveying) · Range Lines
Keep studying
Government Survey: Township, Range, Sections, and Acreage
References: California DRE: real estate glossary
Pronunciation (US): muh-RID-ee-un (capitals show stress)
Pronunciation reference: Merriam-Webster
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