equinoctial line
The 'equinoctial line' is an older term primarily used in astronomy and geography to describe an important imaginary line related to Earth's equator.
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Definition
C2Astronomy
(technical, academic)An imaginary circle on the celestial sphere that aligns with Earth's equator.
Example
- Astronomers often refer to the celestial equator as the equinoctial line.
C2Geography
(obsolete)An old term for the Earth's equator, the imaginary line encircling the globe, equidistant from the poles.
Example
- In historical texts, explorers would often mention crossing the equinoctial line.
Similar
Terms that have similar or relatively close meanings to "equinoctial line":