MAA Glossary

Z


Zenith:
The point directly overhead, as determined by the indefinitie upward extension of a plumb line.

Zodiac:
The twelve constellations along the ecliptic through which the sun, the moon and the planets move: Ram, Bull, Twins, Crab, Lion, Virgin, Scales, Scorpion, Archer, Sea Goat, Water Carrier, Fishes.