principal meridian
C3978
concept
A principal meridian is a primary north–south reference line used in land surveying to establish a coordinate framework for mapping and property boundaries within a specific region.
All labels observed (2)
| Label | Occurrences |
|---|---|
| principal meridian canonical | 4 |
| line of longitude | 2 |
Description generation (CDg)
The one-sentence description above was generated by prompting gpt-5.1 with the class name and this instruction.
Instruction
generate a one-sentence description for a given conceptual class. # Response Format Return only the sentence: "Description: [one-sentence description of the conceptional class]"
Input
Class: principal meridian
Generated description
A principal meridian is a primary north–south reference line used in land surveying to establish a coordinate framework for mapping and property boundaries within a specific region.
Instances (6)
| Instance | Via concept surface |
|---|---|
| Prime Meridian | line of longitude |
| Humboldt meridian | — |
| Mount Diablo meridian | — |
| International Date Line | line of longitude |
| Michigan meridian | — |
| San Bernardino meridian | — |