meridian circle

noun

, Astronomy.

1. a transit instrument provided with a graduated vertical scale, used to measure the declinations of heavenly bodies and to determine the time of meridian transits.

meridian circle

noun

1. an instrument used in astronomy for determining the declination and right ascension of stars. It consists of a telescope attached to a graduated circle

Word History and Origins

Origin of meridian circle¹

First recorded in 1540–50

Example Sentences

Through a slot in this post passes a graduated meridian circle within which the globe ball revolves.

From Project Gutenberg

The meridian circle of iron, likewise, is not graduated, and like the wooden base is not a part of the original mounting.

From Project Gutenberg

Through this horizon circle passes an adjustable meridian circle 39 cm.

From Project Gutenberg

Its meridian circle is a comparatively recent and very clumsy substitute of wood for the original which doubtless was of brass.

From Project Gutenberg

The meridian circle of wood, within which the sphere is made to revolve, is graduated.

From Project Gutenberg