perihelion
中文来自 ECDICT
- n.
- 近日点，最高点，顶点
构词拆分
演变路径（由近及远）
- 英语
- 借自 ←晚期拉丁语 perihelium
- 源自 ←古希腊语 περι- “around; surrounding”
- 源自 ←原始印欧语 *per- “before, in front; first”
- 源自 ←原始印欧语 *sóh₂wl̥ “sun”
原始词根
原始印欧语 *per-
词源说明
From perihelium (“perihelion”) (obsolete) + -ion (suffix used for other names of apsides). Perihelium is borrowed from Late Latin perihelium, from Ancient Greek περι- (peri-, “around; surrounding”), ultimately from Proto-Indo-European *per- (“before, in front; first”)) + ἥλιος (hḗlios, “sun”) (ultimately from Proto-Indo-European *sóh₂wl̥ (“sun”)), which was modelled after perigeum (“point in an orbit about the Earth that is closest to the Earth, perigee”).