octantWiktionary 原文英美词源链拉丁语Latin约前 75–公元 3 世纪octāns↓ 派生英语Englishoctant词源说明From Latin octāns. Doublet of Octans.释义名词noun1The eighth part of a circle; an arc of 45 degrees.2(astrology) The aspect of two planets that are 45°, or one-eighth of a circle, apart.3(geometry) The eighth part of a disc; a sector