Standard Lemma guide

dipleidoscope

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

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1

noun

Meaning 1

An instrument for determining the time of apparent noon. It consists of two mirrors and a plane glass in the form of a prism, so that, by the reflections of the sun's rays from their surfaces, two images are presented to the eye, moving in opposite directions, and coinciding at the instant the sun's centre is on the meridian.

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From diplo- (“double”) + Ancient Greek εἶδος (eîdos, “image”) + -scope.