- (a.) A great circle of the sphere passing through the poles of the heavens and the zenith of a given place. It is crossed by the sun at midday.
- (a.) Hence: The highest point, as of success, prosperity or the like; culmination.
- (a.) Pertaining to the highest point or culmination; as, meridian splendor.
- (a.) Midday; noon.
- (a.) Being at or pertaining to, midday; belonging to or passing through, the highest point attained by the sun in his diurnal course.
- (a.) A great circle on the surface of the earth, passing through the poles and any given place; also, the half of such a circle included between the poles.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). meridian. Retrieved September 25, 2026, from http://smartdefine.org/meridian/definitions/2031924 |
| Chicago | Webster's. 2011. "meridian" http://smartdefine.org/meridian/definitions/2031924 (accessed September 25, 2026). |
| Harvard | Webster's 2011, meridian, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/meridian/definitions/2031924>. |
| MLA | Webster's. "meridian" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/meridian/definitions/2031924> |