Science / Tides and Currents / ZO: Symbol recommended by the International Hydrographic Organization to represent the elevation of mean sea level above chart datum.
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Seismic Transition Zone

Science / Geology / Seismic Transition Zone: A seismic discontinuity, found in all parts of the Earth, at which the velocity increases rapidly with depth: especially the one at 300 to 600 kilometers. MORE


Science / Marine Biology / Scyphozoa: The true jellyfish, members of the phylum Cnidaria MORE

Side Zone

Entertainment / Football / Side Zone: The area between a hash mark and a sideline MORE

Sidereal Zodiac

Science / Astrology / Sidereal Zodiac: Based on the division of the circle of twelve constellations: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces; the basis for sidereal astrology. MORE

Soil Moisture Zone

Business / Agriculture / Soil Moisture Zone: Depth of soil from which plant roots extract water. MORE


Science / Psychiatry / Schizophrenia: (skiz-o-fre-ne-ah) A common type of psychosis characterized by hallucinations and/or delusions, personality changes, withdrawal, and serious thought and speech disturbances. MORE