almucantar

[天]平纬圈, 等高圈

发音

UK /ælməˈkæntə/
US /ælməˈkæntɚ/

词形变化

almucantars 复数 almucantars

别名

almacantar almicantar almucanter

释义与例句

n.
  1. 1.

    A small circle on the celestial sphere, parallel to the horizon, that is used in astronomy and navigation to show altitude of a star or any other heavenly body.

    古体 历史 天文
  2. 2.

    An instrument for observing the heavenly bodies as they cross such a circle.

    古体 历史 天文

相关短语

almucantar staff

词源

From Middle English almicanteras, French almicantarat, almucantarat, from Medieval Latin almicantarath, almucantarath, from Arabic المقنطرات (almuqanṭarāt, “circles of celestial latitude”), from قَنْطَرَة (qanṭara, “arch”).

来源：wiktionary