sextantn. 六分儀學術名詞六分儀:天文學、地球科學、物理化學儀器設備、物理學、造船工程、測量學六分儀座:地球科學六點儀:礦冶工程英文釋義a unit of angular distance equal to 60 degreesa measuring instrument for measuring the angular distance between celestial objects; resembles an octant