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| 224 to 227 of 227 glossary terms |
| zenith: the point on the celestial sphere directly above the observer.
| zodiac: a band of 12 constellations of stars straddling the ecliptic; the ecliptic and zodiac are conventionally divided into these constellations, 30 degrees being allocated to each.
| zodiacal calendar: pair of circular scales, one of the signs and degrees of the zodiac, the other of the days and months of the year, which yields the date of the sun's position in its annual cycle. Commonly included on the back of an astrolabe.
| zodiacal sign: one of the star constellations included in the zodiac.
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