Science / Weather / Density: The ratio of the mass of a substance to the volume it occupies. In oceanography, it is equivalent to specific gravity and represents the ratio of the weight of a given volume of sea water to that of an equal volume of distilled water at 4.0?°C or 39.2?°F.
Search Google for Density:
Business / Internet Marketing / Keyword Density: Keywords as a percentage of indexable text words. MORE
Entertainment / Photography / Background Density: Density of any selection of a negative or print on which there is no image. Also referred to as fog level. MORE
Health / Fitness / Bone Density: Soundness of the bones within the body, low density can be a result of osteoporosis. MORE
Science / Geology / Density Current: A gravity-driven flow of dense water down an underwater slope. The increased density of the water is a result of a temperature difference, increased salinity or suspended sediment load. MORE
Science / Marine Biology / Density-Dependent Factors: Factors, such as resource availability, that vary with population density MORE
Science / Weather / Density Altitude: The altitude at which a given density is found in the standard atmosphere. Used in aviation, it is computed from the station pressure at takeoff and the virtual temperature at the particular altitude MORE