English-Thai Dictionary
aphelion
N จุด ไกล สุด ของ ดาวหาง หรือ ดาวนพเคราะห์ ที่อยู่ ห่าง จาก พระอาทิตย์ jut-klai-sud-khong-dao-hang-rue-dao-nob-pha-khro-ti-yu-hang-jak-phra-ar-thid
Webster's 1828 Dictionary
APHELION
n.[Gr. from, and the sun. ] That point of a planet's orbit which is most distant from the sun; opposed to perihelion.
Webster's 1913 Dictionary
APHELION
A *phel "ion, n.; pl. Aphelia. Etym: [Gr. (Astron.)
Defn: That point of a planet's or comet's orbit which is most distant from the sun, the opposite point being the perihelion.
New American Oxford Dictionary
aphelion
a phe li on |əˈfēlyən, əˈfēlēən əˈfiljən | ▶noun ( pl. aphelia |əfēlyə, əˈfēlēə | or aphelions ) Astronomy the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion . The opposite of perihelion. ORIGIN mid 17th cent.: alteration of modern Latin aphelium (by substitution of the Greek inflection -on ), from Greek aph' hēlion ‘from the sun. ’
Oxford Dictionary
aphelion
aphelion |apˈhiːlɪən | ▶noun ( pl. aphelia |-lɪə | ) Astronomy the point in the orbit of a planet, asteroid, or comet at which it is furthest from the sun: Mars is at aphelion . The opposite of perihelion. ORIGIN mid 17th cent.: alteration of modern Latin aphelium (by substitution of the Greek inflection -on ), from Greek aph' hēlion ‘from the sun ’.
The Wordsmith Dictionary