perihelian
/ˌpɛrɪˈhiːlɪən/Astronomy. Now rare
adjective
Of or relating to the perihelion of a planet, comet, etc.
Origin
Late 17th century; earliest use found in William Leybourn (1626–1716). From periheli- + -an.
- Cooper, Sir Henry
- Cooperstown
- Cooper, Susie
- coopery
- coopetition
- co-opt
- co-optation
- co-option
- co-optive
- coordinate
- co-ordinate
- Coordinated Universal Time
- coordinate geometry
- coordinating conjunction
- coordination
- coordination compound
- coordination number
- coordinative
- coordinator
- coot
- cootch
- cooter
- cootie
- cooty
- co-own