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11Overall pressure ratio — In aeronautical engineering, the term overall pressure ratio is defined as the ratio of the stagnation pressure as measured at the front and rear of the compressor of a gas turbine engine. Generally speaking, a higher overall pressure ratio… …
12Waist–hip ratio — Measurement of waist hip ratio: In a lean person (left), the waist can be measured at its narrowest point, while for a person with convex waist (right), it may be measured at about one inch[1] above the navel. The hip is measured at its widest… …
13Return ratio — The return ratio of a dependent source in a linear electrical circuit is the negative of the ratio of the current (voltage) returned to the site of the dependent source to the current (voltage) of a replacement independent source. The terms loop… …
14Blip-to-scan ratio — In radar systems, the blip to scan ratio, or blip/scan, is the ratio of the number of times a target appears on a radar display to the number of times it could have been seen. [ [http://www.answers.com/topic/blip scan ratio?cat=technology blip… …
15odds ratio — The odds ratio is the ratio of two odds. If, for example, there is an experimental process (pe) and a standard process (ps) then the odds ratio is defined as pe (1 ps)/ps (1 pe). Unlike most measures of association, 1.0 represents a complete… …
16Brain to body mass ratio — (also known as the Encephalization Quotient or EQ) is a rough estimate of the possible intelligence of an organism.It is defined as the ratio of the actual brain mass to the expected brain mass of a typical animal that size, EQ=m(brain)/Em(brain) …
17Water-cement ratio — is the ratio of weight of water to the weight of cement used in a concrete mix. It has an important influence on the quality of concrete produced. A lower water cement ratio leads to higher strength and durability, but may make the mix more… …
18Bypass ratio — The term bypass ratio (BPR) relates to the design of turbofan engines, commonly used in aviation. It is defined as the ratio between the mass flow rate of air drawn in by the fan but bypassing the engine core to the mass flow rate passing through …
19aspect ratio — in general, a term for how the image appears on the screen based on how it was shot; refers to the ratio of width (horizontal or top) to height (vertical or side) of a film frame, image or screen; the most common or standard aspect ratio in… …
20compression ratio — Auto. the ratio of the cylinder volume enclosed by the piston at its outermost position to the volume enclosed by it at its innermost position. [1905 10] * * * Degree to which the fuel mixture in an internal combustion engine is compressed before …
