- 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.
Origin of meridian circle
First recorded in 1540–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for meridian circle
Was he not drowsing over his eyepiece in the meridian-circle room?The Man Who Rocked the Earth
- an instrument used in astronomy for determining the declination and right ascension of stars. It consists of a telescope attached to a graduated circle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012