an instrument formerly used to find the altitude of a star, etc.: it was replaced by the sextant
Origin of astrolabeMiddle English astrelabie ; from Old French astrelabe ; from Medieval Latin astrolabium ; from Classical Greek astrolabon ; from astron, star + lambanein, to take: see latch
A medieval instrument, now replaced by the sextant, that was once used to determine the altitude of the sun or other celestial bodies.
Origin of astrolabeMiddle English astrelabie, from Old French astrelabe, from Medieval Latin astrolabium, from Greek astrolabon, planisphere : astro-, astro- + lambanein, lab-, to take.
- An astronomical and navigational instrument for gauging the altitude of the Sun and stars.
Middle French astrolabe, Old French astrelabe, from Ancient Greek ἀστρολάβος (astrolabos, “star-taking”), from ἄστρον (astron, “star”) + λαμβάνω (lambanō, “I take”).