perihelion point

См. также в других словарях:

• Perihelion — Per i*hel ion, Perihelium Per i*he li*um, n.; pl. {Perihelia}. [NL., fr. Gr. ? about, near + ? the sun.] (Astron.) That point of the orbit of a planet or comet which is nearest to the sun; opposed to {aphelion}. [1913 Webster] …   The Collaborative International Dictionary of English

• perihelion — (n.) point at which a celestial body is nearest the Sun, 1680s, coined in Mod.L. (perihelium) by Kepler (1596) from Gk. peri near (see PERI (Cf. peri )) + helios sun (see SOL (Cf. sol)), and subsequently re Grecianized …   Etymology dictionary

• perihelion — [per΄ə hē′lē ən, per΄ihēl′yən] n. pl. perihelions or perihelia [per΄i hē′lēə, per΄i hēl′ə] [ModL < Gr peri , around + hēlios, the SUN1] the point nearest the sun in the orbit of a planet, comet, or man made satellite: see APHELION …   English World dictionary

• Perihelion (jeu vidéo) — Pour les articles homonymes, voir Perihelion. Perihelion Éditeur Psygnosis Développeur Morbid Visions Date de sortie 1993 …   Wikipédia en Français

• perihelion — The point in the orbit of a planet or a comet where it is nearest to the sun. The earth is at perihelion about January 1, when it is 3.4%, or about 3 million miles nearer to the sun than about July 1, when it is at aphelion the point farthest… …   Aviation dictionary

• point of periapsis — noun (astronomy) the point in an orbit closest to the body being orbited • Syn: ↑periapsis • Ant: ↑point of apoapsis, ↑apoapsis (for: ↑periapsis) • Topic …   Useful english dictionary

• 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 — 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 The point in the elliptical orbit of a planet or comet etc where it is nearest to the sun. Ant: aphelion See Also: aphelion …   Wiktionary

• PERIHELION —    the point on the orbit of a planet or comet nearest the sun …   The Nuttall Encyclopaedia

• perihelion — per·i·he·li·on || ‚perɪ hɪːlɪən n. closest point to the sun in the orbit of a planet or comet …   English contemporary dictionary