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carbon cycle
The physical cycle of carbon through the Earth’s biosphere, geosphere, hydrosphere and atmosphere that includes such processes as photosynthesis, decomposition, respiration and carbonification.
operating cycle
(business) The business cycle from startup of operations to the profit; from obtaining the raw material, through designing and production, to the distribution and profits.
CNO cycle
Otto cycle
The basic thermodynamic cycle of the normal four-stroke internal combustion engine: isentropic compression, constant-volume heat addition, isentropic expansion, and constant-volume heat rejection.
menstrual cycle
The recurring cycle of physiological changes in the uninseminated females of some animal species that is associated with reproductive fertility; especially the cycle in a human woman.
sulfur cycle
(chemistry, biochemistry) the natural cycle which includes the mineralization of organic sulfur to sulfide, oxidation of this to sulfate, and reduction of this to sulfide followed by microbial incorporation of this into organic compounds
cycle paths
plural of cycle path
cycling shorts
hydrolic cycles
plural of hydrolic cycle