Science / Astrology / Tropical Zodiac: The circle of signs that follows the apparent path of the Sun (ecliptic). Also called the movable zodiac because it shifts slightly each year relative to the constellations of the sidereal zodiac. See also Precession of the Equinoxes.
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Science / Astrology / Zodiac: From the Greek zodiakos, literally circle of animals. See also tropical zodiac, sidereal zodiac. MORE
Science / Weather / Tropical Storm: A tropical cyclone in which the maximum sustained surface winds are from 39 miles per hour (34 knots) to 73 miles per hour (63 knots). At this point, the system is given a name to identify and track i MORE
Science / Astrology / Tropical Signs: Cancer and Capricorn; so-called because they occupy parts of the ecliptic where the Sun reaches its farthest point north (Tropic of Cancer) and south (Tropic of Capricorn). The Sun's ingress into thes MORE
Science / Biology / Tropical Rain Forest Biome: The most complex and diverse biome; found near the equator in South America and Africa; characterized by thin soils, heavy rainfall, and little fiuctuation in temperature. MORE
Science / Weather / Tropical Wave: Another name for an easterly wave, it is an area of relatively low pressure moving westward through the trade wind easterlies. Generally, it is associated with extensive cloudiness and showers, and ma MORE
Science / Weather / Tropical Prediction Center (TPC): A division of the National Centers for Environmental Prediction, the Center issues watches, warnings, forecasts, and analyses of hazardous weather conditions in the tropics for both domestic and inter MORE