perihelial
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perihelial — adjective see perihelion … New Collegiate Dictionary
perihelial — adj. of the perihelion, of closest point to the sun in the orbit of a planet or comet … English contemporary dictionary
perihelial — peri·he·li·al … English syllables
perihelial — |perə|hēlēəl adjective Etymology: New Latin perihelion + English al : of or relating to perihelion … Useful english dictionary
perihelion — perihelial, perihelian, adj. /per euh hee lee euhn, heel yeuhn/, n., pl. perihelia / hee lee euh, heel yeuh/. Astron. the point in the orbit of a planet or comet at which it is nearest to the sun. Cf. aphelion. See diag. under aphelion. [1660 70; … Universalium
perihelion — noun (plural perihelia) Etymology: New Latin, from peri + Greek hēlios sun more at solar Date: 1666 the point in the path of a celestial body (as a planet) that is nearest to the sun compare aphelion • perihelial adjective … New Collegiate Dictionary
perihelion — n. point in orbit nearest sun. ♦ perihelial, ♦ perihelian, a … Dictionary of difficult words
