a division of time equal to the equinoctial year plus 20 minutes, representing the time required for the earth to complete one revolution around the sun, measured with relation to the fixed stars.
IS YOUR DESERT PLANT KNOWLEDGE SUCCULENT OR DRIED UP?
Cactus aficionados, don't get left in the dust with this quiz on desert plants. Find out if you have the knowledge to survive this prickly foray into the desert!
Question 1 of 7
This tall, horizontally branched cactus is probably the most recognizable cactus in Arizona. What is it called?
Compare anomalistic year.
Origin of sidereal year
First recorded in 1675–85
Words nearby sidereal year
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for sidereal year
See year (def. 5)
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