hour circle

noun

Definition of hour circle

  1. :  a circle on the celestial sphere that passes through both celestial poles

1690

First Known Use of hour circle

1690


Learn More about hour circle


Seen and Heard

What made you want to look up hour circle? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

holding stubbornly to a belief or view

Get Word of the Day daily email!