Phrase guide

triangulation pillar

noun · 1 senses · updated from the 2026-07-25 local source snapshot

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1

noun

Meaning 1

A concrete pillar used by the Ordnance Survey as a point for taking theodolite measurements, used in determining the exact shape of the country in a mid-20th-century retriangulation project.

Definition source: English Wiktionary via Wiktextract

Usage: UK

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Meaning relationships

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Antonyms: none provided

History

Etymology

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