noun, plural per·i·he·li·a [per-uh-hee-lee-uh, -heel-yuh] /ˌpɛr əˈhi li ə, -ˈhil yə/. Astronomy.
Origin of perihelion
Examples from the Web for perihelion
Contemporary Examples of perihelion
I'm not trying to calculate the perihelion of Jupiter or do 3D renderings of the National Cathedral.Upgrading Ain't What It Used to Be
February 22, 2013
Historical Examples of perihelion
In the orbit of a planet, means the line joining its aphelion and perihelion.The Sailor's Word-Book
William Henry Smyth
After the perihelion it will not be visible in these parts of the world.
The denser portion of the meteoric stream was then approaching its perihelion.Meteoric astronomy:
Within ten days of its appearance the comet reached its perihelion.
The perihelion passage of 1456 was, until recently, the earliest known.