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单词 θ39
释义
the world > the universe > celestial sphere > circle of celestial sphere > [noun] (73)
circle of altitudec1000

spec. Astronomy circle of altitude n. a small circle parallel to the horizon, having its pole in the zenith; an almacantar. circle of curvature n.

linea1387

A circle of the terrestrial or celestial sphere; e.g. †ecliptic line, equinoctial line, †tropic line. Now rare.

Subcategories:

— great circle (58)
— lesser circle (10)
— fact of not being concentric with sphere (1)
— astronomical triangle (2)
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更新时间:2024/9/20 21:22:34