As nouns the difference between perihelion and arachnid
is that perihelion is the point in the elliptical orbit of a planet or comet etc. where it is nearest to the Sun while arachnid is any of the eight-legged creatures, including spiders and scorpions, of the class Arachnida
perihelion
English
Noun
(perihelia)
(astronomy) The point in the elliptical orbit of a planet or comet etc. where it is nearest to the Sun.
Antonyms
* aphelion
Related terms
* aphelion
* perigee
* apolune
* perilune
* periastron
arachnid
Noun
(
en noun)
Any of the eight-legged creatures, including spiders and scorpions, of the class Arachnida
Hyponyms
* See also
Derived terms
* arachnophobia
